Geothermal pumps can be used for cooling, but not heating.
true or false?...
Physics, 26.01.2020 08:31 emmaguentherp3hjd3
Geothermal pumps can be used for cooling, but not heating.
true or false?
Answers: 1
Physics, 22.06.2019 18:50
8.29 two streams containing pyridine and acetic acid at 25Β°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25Β°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (Ξ΄mixh) is given below.
Answers: 3
Physics, 22.06.2019 20:20
The temperature in gavin's oven is a sinusoidal function of time. gavin sets his oven so that it has a maximum temperature of 280Β°f and a minimum temperature of 240Β°. once the temperature hits 280Β°, it takes 20 minutes before it is 280Β° again. gavin's cake needs to be in the oven for 30 minutes at temperatures at or above 270Β°. he puts the cake into the oven when it is at 260Β° and rising. how long will gavin need to leave the cake in the oven? (round your answer to the nearest minute.)
Answers: 3
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