Brady THT-5-473-10 1" Width x 0.5" Height, B-473 Static Dissipative Polyester, Gloss Finish White Thermal Transfer Printable Label (10000 per Roll)

number 41 what is the best coefficient of performance for a heat pump that has a hot reservoir temperature of 50 degrees celsius and a cold reservoir temperature of negative 20 degrees celsius all right so i'm going to use the formula i developed in number 37 so please check that number out number 37 here in this chapter for how i arrived at this formula the coefficient of performance here for a heat pump is basically going to be equal to 1 over the efficiency if i want to find the best possible coffee performance that i'm going to be using the car no efficiency all right so now i realized well they told me two temperatures they didn't tell me the efficiency so i just have to think how to do a quick substitution and i realized that the efficiency cardinal efficiency is related to temperatures via that formula so i can basically just do a simple substitution here right where i say that t