Energy Efficiency, Acoustics and daylighting in Building -

Feedback for Energy Efficiency, Acoustics and daylighting in Building

Dear student

We are glad that you have attended the NPTEL online certification course.

We hope you found the NPTEL Online course useful and have started using NPTEL extensively.

In this regard, we would like to have a feedback from you regarding our course and whether there are any improvements, you would like to suggest.

We are enclosing an online feedback form and would request you to spare some of your valuable time to input your observations. Your esteemed input will help us in serving you better.

The link to give your feedback is :

https://goo.gl/forms/q1ebPCqHvchAYyqt1

We thank you for your valuable time and feedback.

Thanks & Regards,

NPTEL Team

Assignment 11

Owing to the large number of errors in configuring assignment 11, Assignment 11 will not be considered towards the final evaluation. Only 8 out of the 11 assignments would be considered towards the final evaluation.

re evaluation of assignment 11 and 12

Re evaluation have been done. some of the questions were ignored form evaluation as there were errors that could not be rectified. a list of questions with errors and the status of rectification is provided in the list below:

Assignment 11:

Q1. Change the answer from 1st option to 2nd option. - Done

Q2. Change the answer from 1st option to 3rd option. - Done

Q3. Change the answer from 1st option to 2nd option. - Done

Q6. Change the numeric range from 195,205 to 275,286 - Done

Q7. Change the answer from numeric 20,25 to range match 27,32. - Ignored from evaluation since it is not possible to change the type of the question

Q8. Change the answer type from numeric to range match. - Ignored from evaluation since it is not possible to change the type of the question

Q9. Change the answer type from numeric to range match. - Ignored from evaluation since it is not possible to change the type of the question

Assignment 12

Q3. Change the answer from 1st option to 4th option. - Done

Q4. Change the answer from 1st option to 2nd option. - Done

Q6. Change the answer from string (4,5) to range (4,5). - Ignored from evaluation since it is not possible to change the type of the question

Q7. Change the answer type from numeric to range match. - Ignored from evaluation since it is not possible to change the type of the question

Reevaluation-1 has been performed for queries until 19th April

Please see if the marks of concerned are updated or not.
Also Q3) of assignment 8 has been cancelled since the units are not mentioned in the question.
Please post additional queries as soon as possible so that a final reevaluation can be carried out.

Solution of week 12 assignment

The solution of the week 12 assignment have been uploaded on the portal. you can find the solution under the same tab as the unit or follow the link given below:
Week 12 assignment solution

Energy Efficiency, Acoustics and daylighting in Building :Video recording on Interactive session

Dear All,

There was an interaction session with some of the students for the course "Energy Efficiency, Acoustics and daylighting in Building"

The video recording is now available in the portal under the last unit "Interactive session"

Those who are interested can take a look.
https://youtu.be/un0jaOWFk90

-NPTEL Team

Solution of revised week 1 assignmwnt

The solution to the revised week 1 assignment assignment have been uploaded on the portal. you can find the solution under the same tab as the unit or follow the following link:
Solution of revised week 1 assignment

Re-Evaluation of Assignments

Dear Students,

The last assignment for the course would be evaluated tomorrow.
If you have any questions that require re-evaluation in any assignment from the beginning of course, please send them to us latest by 06:00 PM, 21-04-2017 (Saturday). For every re-evaluation request you send us, please mention the details of question to be re-evaluated and the appropriate reason for raising the request along with a screenshot attached. Re-Evaluation requests cannot be entertained beyond the above deadline. So, please do the needful.
Most of the re-evaluation requests raised so far have been addressed except a few cases wherein we have marked those requests for future. However, students whose re-evaluation request is pending may also drop us reminder emails, preferably as reply to our previous conversations.
Solutions of pending assignments would be uploaded soon.

Best Regards,
TAs.

week 11 assignment solution

The solution of week 11 assignment have been uploaded on the portal. you can find the link under the same tab as the unit. click on the following link:
Solution of week 11 assignment

Energy Efficiency, Acoustics and daylighting in Building : Hall ticket for April 28/29 NPTEL Online Certification exams is now available for download

Dear Candidate:

If you have registered and paid successfully for the April28/29 NPTEL Online certification exams, your Admit Card/Hall ticket is now available at http://nptelonlinecourses.iitm.ac.in/

Login with your registered Google-enabled account email id (used to access the course on the portal and used for registering for the exam) and its password to access the link. Click on April exam to download the hall ticket(s) for the April28/29 exams, from the link.

2. You can also download it from the alternate link given below:
https://cdn3.digialm.com//EForms/configuredHtml/885/54105/login.html

Please try to access both the links to download your hall ticket: if you are not able to find your hall ticket in both the links, kindly write to us at nptelexam@nptel.iitm.ac.in

Note that you will be able to login here, only if you have a valid registration for exams on April 28/29, 2018.

Please download hall ticket, take a print out and along with a original ID card, carry it with you to the exam venue (The exam centre address is displayed in the hall ticket). Read all instructions given in the admit card/ hall ticket carefully and follow them.
Download hall tickets for all the exams you have registered for - in case you don't get the hall tickets for any particular course, please write to nptelexam@nptel.iitm.ac.in .

IMPORTANT:

1. Change of shift, course, exam center, exam city is NOT POSSIBLE.
2. You WILL NOT BE ALLOWED to write the exam if you are showing up at the exam center which is not allocated to you by mistake or by intention.
3. Candidates will not be allowed to write the exam without Hall ticket and proper id proof. Proof on the mobile phones or soft copy of hall ticket is NOT PERMITTED.

NPTEL Team wishes you the very best for the certification exam.

Q1_Live Session

A large rectangular hall of size 20m long by 12m wide is 6.5m in height has a stage centered on

12m wall at one end. The floor has a heavy carpet covering laid on concrete and has an

absorption coefficient value of 0.37 for 1kHz frequency. The seating is upholstered lather covered

sets with an absorption value 0f 0.61 at the above frequency and there is a seating capacity of

210. The side walls and the wall behind the stage is gypsum plaster with absorption coefficient

value of 0.04 at 1kHz. There is a curtain over the rear wall and the absorption coefficient for the

same is 0.75. Assume stage surface area is small compared to rest of the area. The room is to be

used for speech and the specified reverberation time is 0.9 sec. What shall be absorption

coefficient of the acoustic tiles, planned to be used over the complete ceiling? [Hint: Use Sabine’s

formula]

Q2_Live Session

A source of sound of 10 µW is placed in an open area. What is the sound pressure level at a

distance of 30m from the source? Consider a directivity factor of 3. What is the air absorption if

the frequency is 500 Hz and R.H is 60%.

Energy Efficiency, Acoustics and Daylighting in Buildings Week-12

Contents for the last week of the course, Week-12, have been released. Assignment-12 has also been uploaded. Due date for assignment is 18-04-2018.

Assignment-10 Solutions Uploaded

Assignment-10 solutions are uploaded on portal. Please check and let us know if you have any queries.

Live session for the course on Energy Efficiency, Acoustics and daylighting in Building

Dear Learners,

Kindly note that we are LIVE streaming one session of the course.

Details are shown below.

Please click on the following link and clarify your doubts.

Date: April 11th
time: 4 pm to 5 pm
Google form: https://goo.gl/forms/GQfirBi3oepbK1SC2
Live streaming Link: https://youtu.be/tunH4mrxrvU

Request you to share this news with students and faculty.

Suggestion - Students/faculty can perhaps assemble in one room/lab,

watch the session together and post their doubts.

Click on the above link to fill the Google form and share questions you may want to ask the Professor.

We would also like to hear from you after the session.

Request you to share your thoughts.

-NPTEL

Correction in Q7) of Assignment 10

If the desired transmission loss value of the floor is 35 dB for airborne noise generated by the machine mentioned in prob.(6), what is the thickness (in cm) of the floor required if the average density of the floor material is 2300 kg/m3.

solution of week 5 and week 6 assignment

The solutions of week 5 and week 6 assignments have been uploaded on the portal. you can click the following links for solutions:
week 5 assignment solution
week 6 assignment solution

Energy Efficiency, Acoustics and Daylighting in Buildings Week-11

Contents of Week-11 have been released. Assignment-11 has also been uploaded. Due date for assignment is 28-03-2018.

Solutions to Assignment-9 are uploaded on the portal

Please see and let us know if you have any doubts.

Energy Efficiency, Acoustics and Daylighting in Buildings Week-10 https://onlinecourses.nptel.ac.in/noc18_ce06/unit?unit=22&assessment=10

Contents of Week-10 are released on the portal. Due date for assignment is 28-03-2018. Link to assignment is https://onlinecourses.nptel.ac.in/noc18_ce06/unit?unit=22&assessment=10

Solutions to Week-8 Assignment are uploaded

The solutions for numerical problems are uploaded. Answers to theoretical questions are available in the Lecture slides. Please go through them and let us know if you have any doubts.

Energy Efficiency, Acoustics and Daylighting in Buildings Week-9

Contents of Week-9 released. Due date for assignment is 28-03-2018. Link to assignment is https://onlinecourses.nptel.ac.in/noc18_ce06/unit?unit=21&assessment=101

Solutions to Week-7 Assignment are uploaded and Re-evaluations performed

Q7) and Q11) have been reevaluated. Please check if your progress has been updated or not.

Technical issues with exam registration form and Q7 of Assignment 7

You may contact NPTEL office for issues related to registration at 044-22575905/5908. Though you may not get instant answers, you will receive responses in due time after proper verification of the details mentioned by you etc.,
We are trying to resolve the error in evaluation of Q7_Assignment 7 and will soon let you know more on this

Revised Week 1 Assignment is uploaded

The revised Week 1 assignment is uploaded with the due date as 29th March.
This is just a short assignment to substitute the week 1 assignment which was not considered for evaluation due to technical errors.

Technical issues with exam registration form

There seems to be some technical issue with the exam registration form. The date for registration will be extended and the same will be announced soon.

Last date for Exam registration extended till March 15, 2018 - 1 pm (Thursday) - Hurry up and register today!!

Dear Candidate,

Due to a technical issue, there was some problem with the exam form since yesterday. Now the issue has been fixed.

The last date for exam registration has been extended till March 15, 2018 - 1 pm (Thursday)

Last date for making the payment individually - March 16, 2018 - 1:00 PM (Friday)

If you have not yet registered for the exam, login to the form and apply for the exam today! If you have filled the form but not done the payment, Please complete the payment before March 16 1:00 pm.

For other details about exam registration, please check our previous announcement.

NOTE: NO EXTENSIONS BEYOND THESE DATES WILL BE GIVEN.

-NPTEL Team

Energy Efficiency, Acoustics and Daylighting in Building : Week 8

Contents of week 8 are released on portal. The assignment for this week can be found at following link
https://onlinecourses.nptel.ac.in/noc18_ce06/unit?unit=20&assessment=100
The deadline for submission of assignment is 21^st March, 2018 (23:59 hrs)
PDF of lecture slides will be uploaded tomorrow.

Exam and Certificate Format : Energy Efficiency, Acoustics and daylighting in Building

Exam and Certificate Format

Dear student

The certification exam will be conducted at designated centres in the city chosen by you. You have to register for the exam by filling up the form, paying the exam fee, appear in person and score >= 40% to get the certificate.

Exam registration form closes on March 14, 2018 - 5 pm (Wednesday).

For other details about exam registration, please check our previous announcement.

Type of exam: Computer based exam

You will have to appear at the allotted exam centre and produce your Hall ticket and Government Photo Identification Card(Example: Driving License,Passport, PAN card, Voter ID, Aadhaar-ID with your Name, date of birth, photograph and signature) for verification and take the exam in person. You can find the allotted exam center details in the hall ticket.

The questions will be on the computer and the answers will have to be entered on the computer; type of questions may include multiple choice questions, fill in the blanks, essay type answers, etc

The hall ticket will be available for download tentatively around 10 - 16th April 2018. We will notify the same through email.

FINAL CERTIFICATE:

The final score = 25% assignment score + 75% final certification exam score.

The final score will determine if you will/will not receive a certificate.

1. Final score < 40%: NO certificate

2. Final score between 40% -59%: Certificate of type "Successfully completing the course"

3. Final score between 60% -89%: Certificate with tag "Elite" printed at the top

4. Final score of 90% and above: Certificate with "Elite" tag and the gold medal printed on it.

Please click the link here for certificate format: https://goo.gl/ZogyXm

-NPTEL Admin

Last date for Exam registration extended - Hurry up and register today!!

Dear Candidates

Last date for exam registration has been extended till March 14, 2018 - 5 pm (Wednesday)

Last date for making the payment individually - March 15, 2018 - 5 PM (Thursday)

The certification exam will be conducted at designated centers in the city chosen by you. You have to register for the exam by filling up the form, paying the exam fee and appear in person to get the certificate.

Hard and soft copy of Certificate will be awarded only to those candidates who register for the exam, attend the certificate examination and whose Final score > 40%

For other details about exam registration, please check our previous announcement.

-NPTEL Team

Week 7 content is released on portal

The assignment is available at the following link https://onlinecourses.nptel.ac.in/noc18_ce06/unit?unit=19&assessment=98
Due date is 14-03-2018 (23:59 hrs)

Solution of week 3 and week 4 assignment

The solution of week 3 and week 4 assignment have been released on the portal. The solution of the the assignment are in excel format and can be found under the respective units.

WEEK 6 videos released

The videos of week 6 and assignment has been released on the portal. please note that the due date for assignment 6 is on 7th March 2018. Please free to ask a question in the forum if you have any.

Regards
TAs

RE-EVALUATION OF ASSIGNMENT 4

Re-evaluation of assignment 4 has been done, you can now check your scores on the progress tabs.

Evaluation of assignment 4

the deadline for assignment 4 finishes today, due to the some technical error at the back end, the right answers would not shown today. the assignment would be re evaluated and correct answers would be shown by tomorrow. so you need not worry if you get answers wrong despite of doing it correctly in tonight's evaluation.

Thanks and Regards
TAs

Week-5 Videos released

Please check if the Week-5 videos are now accessible to you or not.

WEEK 5 videos released

The videos of week 5 and assignment has been released on the portal. please note that the due date for assignment 5 is on 28th Feb 2018. Please free to ask a question in the forum if you have any.

Regards
TAs

Solution of week 2 assignment

The solution of the week 2 assignment has been uploaded. you can find it under the tab where the lectures of week 2 are uploaded. The solution sheet is in excel format so that you can see the formula and calculate for yourself.

Reordering of video lectures and postponement of assignment deadline

As pointed out by one of the students in discussion forum, there are discrepancies in the sequence of uploaded video lectures. The lectures are rearranged in the correct sequence now and can be viewed on the website. The correct sequence has to be identified based on the updated arrangement order of tabs on the website/ from the name appearing on the top of the video in youtube (photo is attached below for your reference). Please ignore the lecture number that appears within the video as it plays. Only rearrangement of videos has been done and no new videos are added. In this process shuffling of videos between weeks 3 & 4 has occurred. We regret the inconvenience caused to the users and will try to be careful next time.

The relationship between the earlier uploaded sequence and the newly updated sequence of lectures is given below for your reference

Old sequence---New sequence
mod4lec16-------mod3lec12
mod4lec15-------mod3lec13
mod3lec13-------mod4lec15
mod3lec12-------mod4lec16

Document containing lecture slides for weeks - 3 &4 is uploaded on website. You may find a few slides not discussed in the video, however they are included to help you in solving the assignment.

Please let us know if you have any further queries.

Wishing you all the best,
TAs.

Q10 - Week 3 Assignment

Dear Student,
In Q No. 10. in Week 3 Assignment, the units for Ventilation heat gain is 'watts'.
So the last line of the question is to be read as below:

"The Ventilation heat gain (in Watt) is ……………"

Week 4 Videos and Assignment Released

Dear Students,
A total of 4 videos have been released this week.
They are:
- Heat Flow in Buildings (Frequency Domain) -1
- Heat Flow in Buildings (Frequency Domain) -2
- Heat Flow in Buildings (Frequency Domain) -3
- Heat Flow in Buildings

The Assignment for Week 4 has also been released. The due date for the assignment is 21 Feb, 2018
Regards,
-TA's

Resent: Regarding errors in evaluation of assignment-1

Due to some technical errors, there were mistakes in the evaluation of assignment-1. Scores obtained in this assignment will not be counted in the final evaluation.
Instead, a new assignment would be uploaded on the web page soon, which has to be submitted & will be evaluated.

answering the numeric type answers

You all are requested to just put a numeral in answer to numeric type answer, do not put any units such as degrees or m/s, just the numeral. otherwise evaluation software would be shown as incorrect after evaluation.

evaluation of assignment 1

There is some problem with the evaluation software due to which some of you did not get marks in spite of giving the correct answers. we are working on to rectify the problem. we will notify as soon as the problem would be solved.

Link to Download Videos

The lecture videos can be downloaded using the following link
http://nptel.ac.in/courses/105102175/
This web page also gets updated every week.

Week 3 Videos and Assignment Released

Dear Students,
A total of 4 videos have been released this week.
They are:
- Heat Flow in Buildings-2
- Heat Flow in Buildings-3
-Admittance Method-1
-Admittance Method-2

The Assignment for Week 3 has also been released. The due date for the assignment is 14 Feb, 2018
Regards,
-TA's

Ref: Question 9 - Assignment 2

The last line of Question 9 in Assignment 2 went missing by mistake:
The complete question is as follows-

"Given a roof (overall area 5 × 4 m2) consisting of 50 mm thick roof tile at top (thermal

conductivity 0.4 W/m°K) and an insulation of 100 mm below it (thermal conductivity 0.05 W/m°K), supported on a 125 mm thick R.C.C (thermal conductivity 1.5 W/m°K) slab and

having 12.5 mm plaster finish (thermal conductivity 0.7 W/m°K) at the ceiling.
Surface conductance are: 18.5 W/m2 °K and 12.5 W/m2 °K, respectively for outside and inside respectively.
Calculate the conduction heat flow through the roof, for a steady temperature difference of 9 degrees, existing between outside and inside."

Assignment - 2

Assignment-2 for this course is now available on course webpage. Please note that the due date for this assignment is 8th Feb, 2018 (23:59 hours) (Thursday)

questions 11 to 15 in assignment 1

I think some of the formulas required to solve question no. 11-15 in the assignment 1 are not given in the PDF slides, we will be uploading the PDF format of the slides for the next week today which includes formulas to the above mentioned questions. as the due date for the assignment is till 5th February, you still have time to solve them using the formulas.

Week 2 Videos Released

Dear Students,
A total of 4 videos have been released this week.
They are:
- Introduction to Environmental Factors-6
- Introduction to Environmental Factors-7
- Comfort and Heat Transfer Concepts
- Heat Flow in Buildings-1

Regards,
-TA's

PDF file of the lecture slides (Week 2)

The PDF file of the lecture slides of week 2 has been uploaded under the "Environmental factors and climatic zones". you can see the slides and use the formulas to solve the assignments of both week 1 and week 2.
Best of Luck

PDF of Lecture Slides

Transcription of videos is not available yet, since this course is offered on NPTEL for the first time. However, for the ease of your studying, we are uploading the PDF format of lecture slides. You can find them under the "Introduction" tab

Regarding usage of Discussion Forum

We encourage students to actively participate on discussion forum. You are free to answer any question posed by some other student also, provided that you are familiar with the answer. Finally, TAs will confirm the best answer/ modify your answer based on it correctness.
Also, we have found students opening new discussions for previously asked questions (eg: regarding uploading of text format of videos). Please avoid doing so for it requires us to answer so many separate discussions. Before asking a question get yourself updated with the previously asked questions and if your question is similar to a previously posed question, you can use the "Me too!" option available below the question. Or post a reply under the same question. Finally, we will address the entire discussion together. We seek your kind co-operation to conduct the course better.

Best regards,
TAs.

Change of Forum Tab on Course webpage

Dear Students,
The 'Forum Tab' on course webpage is now renamed as 'Ask a question'. Please use the same for participating in discussions hereafter.
Best regards,
TAs.

How to access the Video Lectures

Dear students,
We have received emails from some of you regarding how to access the video lectures uploaded. The images appended below will guide you in the steps to be followed. We also request you to post your questions on discussion forum rather than sending us emails so that (i) we don't have to answer the same question repeatedly and (ii) your question might help others also.
We are in the process of sorting out errors in the functionality of "Ask a question" tab available beneath each video. It was found that some students have raised questions using that tab but they are not reflected on the forum and we found them in the spambox. Similarly, questions posted on discussion forum by some students have landed up in spambox. We will sort out these errors very soon.
We suggest all students to participate on discussion forum and see whether your posts are reflected on the forum or not. In case of any discrepancy, please let us know through email with subject as "Problem with Forum Posts" so that it can be sorted now. Please go through the introductory videos available on the portal on how to use the discussion forum etc., (https://onlinecourses.nptel.ac.in/noc18_ce06/unit?unit=1&lesson=3)

Best regards,
TAs

Energy Efficiency, Acoustics and Daylighting in Building Week 1 Lectures released

Dear Student,
The lectures for the first week of the course have been released on the NPTEL course page along with the assignment1 for the first week.

Kindly note that the due date for the first assignment is on 5th Feb 2018.

You can ask in the forum if you have any query related to the course or assignment.
Hoping a great learning experience for you.

Thanks and regards
TAs

Reminder 1:REGISTER TODAY - CERTIFICATION EXAM FORM IS NOW OPEN!

Dear Student:

Here is the much-awaited announcement on registering for the April 2018 certification exam. The registration for the certification exam is open only to students who have enrolled in the course.

Registration is open from 09th January 2018 (Tuesday) until March 07, 2018 10:00 AM (Wednesday).

The certification exam registration URL is: http://nptelonlinecourses.iitm.ac.in/

(If you want to register for the exam for this course, login here using the same email id used to enroll to the course)

Dates of exam: April 28 and April 29, 2018

Session: [Afternoon] For this course there is no ”Forenoon” Session.

You can register for a maximum of 4 course exams (same day of exam – 2 sessions. Same center will be allocated for both the sessions).

Exam Session time: Forenoon: 9.00 AM -12.00 PM ; Afternoon: 2.00 PM - 5.00 PM

Examination Cities: The exam is to be conducted in several cities across India whose list is available on the registration form.

Click here to access the list of exam cities: http://nptel.ac.in/pdf/examcities_final.pdf

Registration fees: Rs 1100/-

(Students belonging to the SC/ST category can avail a 50% fee waiver - please select Yes for the SC/ST option and upload the correct Community certificate)

Students belonging to the PwD category can avail a 50% fee waiver - please select Yes for the option and upload the relevant Disability certificate.

Mode of payment: Online payment - debit card/credit card/net banking or via SPOC of college

HALL TICKET:

The hall ticket will be available for download tentatively between 10 - 16th April 2018. We will confirm the same through an announcement once it is published.

Final score on certificate: 25% of assignment score + 75% of certification exam score.

Award of certificate: Hard and soft copy of Certificate will be awarded only to those candidates who register for the exam, attend the certificate examination and whose Final score >= 40%

The final score, assignment score and exam score will be printed on the certificate. The certificate will also have a link to the NPTEL website (http://nptel.ac.in/noc), where on logging in, your scores and e-certificate will be available for verification (Appropriate announcements will be made). Please do regularly submit assignments to get a good final score.

IMPORTANT NOTES

1) FOR CANDIDATES WHO WOULD LIKE TO WRITE MORE THAN 1 COURSE EXAM:- you can add or delete courses and pay separately – till the date when the exam form closes. No changes will be entertained after that.

2) FOR CANDIDATES WHO ARE PAYING VIA THE LOCAL CHAPTER OF YOUR COLLEGE:-

1. In the exam form, you will fill all the details and also upload photo, signature.

2. Ensure that you had selected your college name correctly from the drop-down list in the form.

3. Payment of exam fees - click on the tab - 'PAY VIA SPOC'.

The SPOC has to now confirm to NPTEL that he/she will pay fees on your behalf.

If the SPOC says NO, you will be intimated via email.

Then it becomes your responsibility to come back to the exam form and make the payment.

If you do not pay the exam fees within the prescribed time, you will not be able to write the exam.

Please read the instructions carefully before submitting the form.

In case of any queries please write to us at noc@nptel.iitm.ac.in

Thanks & Regards,

NPTEL TEAM

ASSIGNMENT 0 has been uploaded

An assignment has been uploaded to give you an idea about the prerequisites of the course. Kindly note that marks of this assignment would not be added in the final assessment.