Thermodynamics: Calculating Outside Temperature of a Greenhouse with Heat Loss

In summary, the conversation discusses a homework problem involving calculating the outside temperature of a green house with given dimensions and a known rate of heat loss. The person asking for help is unsure of where to start and is reminded to look for an equation that relates heat conducted and temperature, as well as the thermal conductivity. The summary advises to refer to the textbook, lecture notes, or class handouts for the equation.
  • #1
pinnacleprouk
26
0

Homework Statement



The rate of heat loss to the outside through a 10mm-thick glass roof of a green house is 120kW. The length and breadth of the glass material of the roof are 20m and 2m, respectively. Calculate the temperature of the outside if the temperature inside the green-house is 25 degrees C.

Assume thermal conductivity of the glass material is 1.0W/m/degrees C.

Please help as I don't know where to start.



Homework Equations




The Attempt at a Solution



I'm not sure where to start unfortuanatly.

Thanks in advance!
 
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  • #2
pinnacleprouk said:

Homework Statement



The rate of heat loss to the outside through a 10mm-thick glass roof of a green house is 120kW. The length and breadth of the glass material of the roof are 20m and 2m, respectively. Calculate the temperature of the outside if the temperature inside the green-house is 25 degrees C.

Assume thermal conductivity of the glass material is 1.0W/m/degrees C.

Please help as I don't know where to start.
There is an equation that relates heat conducted and temperature. It involves the thermal conductivity too.

The fact that you have been assigned this problem means that this equation is somewhere in your textbook, lecture notes, or class handouts. Find this equation in your textbook, lecture notes, or class handouts -- that is where to start.
 

1. What is thermodynamics?

Thermodynamics is the branch of physics that deals with the study of heat and energy and their interconversion.

2. What are the laws of thermodynamics?

The first law states that energy cannot be created or destroyed, only transferred or converted. The second law states that the total entropy of a closed system will always increase over time. The third law states that the entropy of a perfect crystal at absolute zero temperature is zero.

3. What is the difference between heat and temperature?

Heat is the transfer of energy from one object to another due to a temperature difference. Temperature is a measure of the average kinetic energy of the particles in an object.

4. How is thermodynamics used in everyday life?

Thermodynamics is used in many everyday applications, such as refrigerators, air conditioners, and engines. It also plays a role in cooking and food preservation.

5. What is the significance of thermodynamics in chemistry?

Thermodynamics is crucial in understanding chemical reactions and their spontaneity. It helps determine the energy changes and the feasibility of a reaction. It also plays a role in studying the behavior of gases and solutions.

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