That there is evidence of electrical failure given that there was a gas leak. Enter your answer in accordance to the item b) of
the question statementEntry field with incorrect answer 0.55 (c) That there is evidence of a gas leak given that there is evidence of electrical failure.
2 answers:
Answer:
a) 0.84
b) 0.643
c) 0.931
Explanation:
Given:
The complete missing question is as follows.
" The maintenance firm has gathered the following information regarding the failure mechanism for 100 air conditioning systems:
Evidence of Gas Leaks
Yes No
Evidence of Electrical Failure Yes 54 4
No 30 12
Find:
a)The failure involves a gas leak
b)That there is evidence of electrical failure given that there was a gas leak.
c)That there is evidence of a gas leak given that there is evidence of electrical failure.
Solution:
"Refer to the attachment for the solution"
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Answer:
a) Ql=33120000 kJ
b) COP = 5.6
c) COPreversible= 29.3
Explanation:
a) of the attached figure we have:
HP is heat pump, W is the work supplied, Th is the higher temperature, Tl is the low temperature, Ql is heat supplied and Qh is the heat rejected. The worj is:
W=Qh-Ql
Ql=Qh-W
where W=2000 kWh
Qh=120000 kJ/h
b) The coefficient of performance is:
c) The coefficient of performance of a reversible heat pump is:
Th=20+273=293 K
Tl=10+273=283K
Replacing:
Answer:
Following the ways of dealing with incomplete questions, i was able to get the complete question, please look at the attachment for ans.
