Answer:
Explanation:
Let assume that heating and boiling process occurs under an athmospheric pressure of 101.325 kPa. The heat needed to boil water is:
The heat liberated by the LP gas is:
A kilogram of LP gas has a minimum combustion power of . Then, the required mass is:
Drip irrigation
Drip irrigation is one of the most efficient types of irrigation systems. The efficiency of applied and lost water as well as meeting the crop water need ranges from 80% to 90%
Answer:
(a) 761.9 W
(b) 184.762 °C
(c) 55.238 °C
(d) see figure
Explanation:
Data
resistance,
area,
(a)
The rate of heat transfer is calculated as
Total flux resistance is
From equation 1
(b)
Between ambient next to material A and material A heat flux is
(c)
Between material B and ambient next to material B heat flux is
(d)
See figured attached
Answer:
50%
Explanation:
<u>Given information</u>
Cooling load=50 kW
COP=2
Consumption=50 kW
<u>Calculations</u>
Revised input is given by cooling load/COP=50/2=25 kW
Efficiency= Work output/ Revised input=25/50=0.5
Efficiency=0.5*100=50%