The discussion focuses on calculating the change in temperature of a 20-liter cooling system filled with methanol, when a small engine, operating at 54% efficiency, pumps 100 liters of water from a depth of 300 meters. The specific heat capacities provided are 4180 J/kg·K for water and 2450 J/kg·K for methanol. The problem requires determining the work done by the engine and how it affects the cooling system's temperature. Key calculations involve the conversion of work into thermal energy and the subsequent temperature change in the methanol.
PREREQUISITESStudents studying physics, particularly those focusing on thermodynamics and energy transfer, as well as engineers working with cooling systems in automotive applications.
Show us what you have done so far. For starters, how much work does the engine have to do? (hint: that is the output).efren17 said:Homework Statement
HELP with physics homework, thermal energy?
I cannot figure out how to solve this problem, can someone show me how?
A small engine pumps 100 liters of water from a well 300m deep. What would the change in temperature be for the engine 20 liter cooling system (filled with methanol) if the engines efficiency is 54%
Specific heat of water 4180, and of methanol 2450
density of water 1kg= L
Homework Equations
The Attempt at a Solution