9_16_2014 Thermo electric cooler

This is an example of a engine in which the heat from the boiling water powers the propeller.
It does a large amount of work as you can see how excited DJ is. This is a Stirling engine.

This is an equation for cooling given a power and the change in temperature. COPc is the Tc over Th-Tc. COPh is the Th over Th - Tc. To calculate Qc we set it equal to W multiplied by COPc by the power.

given that 5 meters is a floor and out object weighs 100kg, how long would it take to climb multiple floors if it takes 760 watts. converting watts to joules per minute.how many floors could you cover in a minute, 9.3. how much long do you have energy for?

you have energy for 13.7 minutes. calculating the change in temperature and calculating a COPreal. a Qh W and Qc are all calculated.

In the problem entropy is equal to zero.The work from one revolution is equal to Qa-Qb. The entropy of the system is equal to the entropy of heat plus the entropy of work plus the entropy of cold. there is no entropy from work and the entropy from heat and from cold is just mcln(Tf/T(h o c)) relatively so the final equation is mcln(tf^2/TaTb) which is equal to zero, as m and c are both constants tf^2/TaTb must equal one.so then Tf=sqrtTaTb.