Exam (elaborations)
CIH - Thermal Questions and Answers 100% Solved
- Course
- Institution
Exam of 3 pages for the course CIH at CIH (CIH - Thermal)
[Show more]
Content preview
CIH - Thermal∆S = (M-W) ± C ± R − E - answer Heat build-up dependent on body to transfer heat to
environment
∆S - Change in heat (btu/hr) (rate)
M - metabolic heat
W - external work performed
C - convection
R - radiation
E - evaporative
+ is a gain by the body
- is a loss from the body
0 is ideal
Convection (on equation sheet)
C=0.65V∧0.6(Ta-95) - answer Transfer of heat directly to fluids (usually air) contacting
the body.
C= Convection Transfer (BTU/hr)
V = air speed (ft/min)
Ta=air temper (°F)
Radiation (on equation Sheet)
R=15(Tw-95) - answerRadiation is the transfer of heat through InfraRed Radiation (IR)
R=Radiant Transfer (BTU/hr)
Tw = mean radiant temperature of objects (°F)
Evaporation (on equation Sheet)
Emax =2.4V^0.6(42-PWa) - answerEvap is the transfer of heat to the environment
through evaporative cooling
Emax - Max evaporative heat loss (BTU/hr)
V - air speed (ft/min)
PWa - vapor pressure of water at air temp (mm of Hg)
Heat Stress Index
(on equation sheet) - answerShould be below 100 (i.e. more heat gain then loss)
Ratio of req heat loss versus max - >70 increased risk
Pychrometric chart - answerGraphical relationship of
water vapor pressure, dry bulb, wet bulb, RH and dew point.
Heat Illnesses (7) - answerHeat stroke
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller julianah420. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
80796 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now