Question

QUESTION 7- HEATING AND COOLING LOAD CALCULATIONS 7.1 What is sol-air temperature? 7.2 Determine the sol-air temperature for a flat roof if the direct radiation normal to the suns rays Dx) is 893 WIm2 and the intensity of scattered radiation normal to the roof (,) is 112 W/m. Take the absorptivity of the roof for direct and scattered radiation as 0.9, the heat transfer coefficient of the outside surface as 34.4 W/m2, the outside air temperature as 37 C and the solar altitude angle as 80°C If the time lag of the roof structure is zero and its decrement factor is unity, calculate the heat gain to the room beneath the roof if the U-value of the roof is 0.5 W/m K and the room temperature is 25%.

can I please to have a clear hand written answer for the above question, your help is appreciated, thanks.

0 0
Add a comment Improve this question Transcribed image text
Answer #1

ABCD 600O CO 1C0 ax10) 135メ10 2000 000 ,321 00o ISO L600 0 01100 12 77/イレ a. Ea

Add a comment
Know the answer?
Add Answer to:
can I please to have a clear hand written answer for the above question, your help...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • can I please to have a clear handwritten answer of the above question, your help is...

    can I please to have a clear handwritten answer of the above question, your help is appreciated, thanks. QUESTION 10- CONDENSERS AND EVAPORATORS 10.1 Explain how relative humidity in a cold room is effected and controlled by evaporator selection 10.2 An air-cooled condenser is to reject 70 kW of heat from the condensing refrigerant to air The condenser has an air-side area of 210 m2 and an overall heat transfer coefficient based on this area of 0,037 kW/m2K. It is...

  • can I please to have an clear hand written answer for above question, your help is...

    can I please to have an clear hand written answer for above question, your help is appreciated, thanks. 15] Question3 A control system is modelled by the following differential equation: dt dt Using Laplace transform solve this differential equation assuming that all the initial conditions [15] are zero. 10

  • summarizr the followung info and write them in your own words and break them into different...

    summarizr the followung info and write them in your own words and break them into different key points.   6.5 Metering Chamber: 6.5.1 The minimum size of the metering box is governed by the metering area required to obtain a representative test area for the specimen (see 7.2) and for maintenance of reasonable test accuracy. For example, for specimens incorporating air spaces or stud spaces, the metering area shall span an integral number of spaces (see 5.5). The depth of...

  • summatize the following info and break them into differeng key points. write them in yojr own...

    summatize the following info and break them into differeng key points. write them in yojr own words   apartus 6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT