Heat Transfer Coefficient

4.Calculate the heat absorbed or released per gram of solute added to the water (in joules/g) record in data table 2. Calculate the average heat per gram by averaging trials 1 and 2.

Problems #65 - #94 from page 311. Please provide your answer after each problem and submit the file with your answers through Blackboard.

Temperature: The heating should be adequate it should not fall below ……. or above ………

You have the mass of water from calculation #9, the specific heat of water is 4.184 J/g(oC), and the temperature change of water

For problems 12 to 14, do the following: (a) Make a scatter diagram of the

2. How did concentration and/or volume differences affect the heat change (q) for each trial?

5. When the circuit gets hotter, what affect does this have on current? Explain using kinetic-molecular theory.

Describe your answer for each item below in complete sentences, whenever it is necessary. Show all of your calculations and processes for the following points:

A. Problem Analysis – Following the directions in the assignment, clearly write up your problem analysis in this section.

1. Consider eight two-cubic centimeter (2 cm3) sugar cubes stacked so that they form a single 2 x 2 x 2 cube. How does the surface area of the single, large cube compare to the total surface area of the individual eight cubes? Report your answer as a ratio. Be sure to show all calculations leading to an answer.

10.) Conclude by comparing which structures allowed the least the surface area behind it to be engulfed in

The aim of this experiment is to analyse the heat transfer of a forced draft cooling water tower and to perform energy and mass balances on the system. The system consisted of a single cooling tower where the heated water flowed down the tower, while air flow was directed against the water flow. In the system the energy consumption of the heating element, the flow rate of the heated water and pressure could be adjusted.

Determining Enthalpy 4.1 Data Collection for Experiment 1 4.1.1 Error Calculations 4.1.2 Determining Enthalpy 5.0 Discussion 19 6.0 Conclusions List of Figures Figure No. Title 2.1 A graphical representation of a carnot heat cycle 3.1 Diagram of the heat pump trainer used 4.1 P-H diagram to determine enthalpy values for 1 fan 4.2 4.3 4.4 4.5 4.6 4.7 P-H diagram to determine enthalpy values for 2 fans Temperature against control panel readings for experiment 1 Temperature against control panel readings for experiment 2 Power consumption against temperature difference Actual COP against temperature difference Heat delivered against temperature difference List of Tables

Since the Bi value of the aluminum system is less than 0.1, convection from the water to the surface of the cylinder is the rate limiting heat transfer mechanism. Thus, a lumped-parameter analysis can be safely applied. The Plexiglas system, on the other hand, has a Bi >> 0.1, and the rate limiting mechanism is conduction in the cylinder.

When dealing with forced convection the most important section, after understanding how convection works, is the convection heat transfer coefficient. The heat transfer coefficient for convection is denoted by (h) and is measured in w/m^2*K, this lab delves into the application of convection heat transfer and how it correlates to