Question

A window-mounted air-conditioner unit is placed on a laboratory bench and tested in cooling mode using 750 W of electric power with a COP of 1.75. What is the cooling power capacity and what is the net effect on the laboratory

Answer 1

Answer:

$Desired\ effect=1312.5\ W$

The net effect on the laboratory is cooling of the space.

Explanation:

Given:

power used by the air conditioner, $P_i=750\ W$

coefficient of performance, $COP=1.75$

We know that:

$\rm COP=\frac{desired\ effect}{Power\ consumed}$

Therefore the cooling power capacity:

$\rm Desired\ effect=COP\times power\ consumend$

$Desired\ effect=1.75\times750$

$Desired\ effect=1312.5\ W$

The net effect on the laboratory is cooling of the space.