Physics : Heat Pump Trainer

The purpose of this laboratory is to determine the experimental quantities of heat transfer and specific heat capacity in a laboratory situation..

According to “A. Boutier” Advanced facilities and instrumentation are required to supply the highly-detailed experimental data needed for CFD code development. The researchers used Questionnaire to answers all the Question.

The quality of my results varies as several anomalous results have been obtained due to the limitations of the apparatus and the technique used, therefore, only the general trend (line of best fit) should be taken into account.

The Effect of the Surrounding Medium of a Fluid on its Rate of Heat Loss was conducted by the experimenter. The sciences behind the investigation include the five primary methods of heat loss and the characteristics of the fluid encompassing mediums such as being good conductors of thermal energy and having low emissivity. The purpose of the experiment was to establish the best medium for sustaining the temperature of a fluid. The experimenter hypothesized that if a liquefied substance is placed in Styrofoam, metal, glass, and thermoflask medium, then the substance’s rate of heat loss will be slowest in the thermoflask medium. To conduct the experiment, the investigator poured 90 degrees Celsius water into the four mediums, Styrofoam, metal, glass, and thermoflask, then recorded the temperatures after 30 minutes. The result temperatures were divided by 30 to calculate the degrees Celsius lost per minute. The hypothesis turned out to be correct with thermoflask losing heat the slowest at a rate of 1.01 degrees Celsius lost per minute. The glass medium had the fastest rate of heat loss at a rate of 1.26 degrees Celsius lost per minute. There was an explanation behind why the results came out the way they did. According to the Stefan-Boltzmann law, materials with low emissivity lose radiated heat slowly. Thermoflasks have a low emissivity which gives reason to why the thermoflask was more efficient at sustaining a temperature of a fluid. The glass’ speedy rate of heat loss was

The results of this simulation are displayed in Fig. 4, where injected and extracted heat per length ((q) ̇/L) pulses were simulated for 300 months. A charging time of 19 months is needed to charge the ground by thermal solar energy in order to achieve the desired design temperature. In the figure, this 19-month period begins in June and ends in January. When the system is actively supplying thermal energy to the building, the temperature rises in the summer months to a peak of about 80 C and falls in the winter months to a low of about 67 C. The yearly average is about 71.5 C.

In day-to-day life it is very common to experience phenomenon’s involving heat or heat transfer. For instance, hand warmers used to warm fingers while skiing and ice packs used to reduce swelling of an injury, involve heat exchange. What is responsible for this heat exchange? Looking at thermochemistry may give an explanation. Thermochemistry is a branch of chemistry focusing on heat. Specifically, it studies heat released or absorbed in a chemical reaction. 1 Reactions releasing heat are referred to as exothermic, while reactions absorbing heat are endothermic. 2

This method of cooling techniques is theoretically able to reduce temperatures from 50 to 27 degrees Celsius. The bidding committee also proposes to use such cooling technologies in fan-zones, training pitches and walkways between metro stations and stadiums.

The first electric fan was invented by wheeler in 1886, consisting of two blades, without the protective cage, run by an electric motor (Carmack, 2009). Over the years, with the advancement in technology, fans have become much lighter, safer, and more efficient. However, even though there are many styles and sizes to choose from, the product’s architecture has not changed significantly (figure 1 and 2 ).

Data is constantly being collected regarding energy consumption at the American Society of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE), headquarters in Atlanta. This data can be accessed by researchers from around the world, allowing them to monitor the performance of a building’s temperature control systems and extract data for further study.

In order to determine the total heat energy released by each of the fuel sources, a graph will need to be constructed to demonstrate the change in the temperature of water over the entire duration of the experiment. From this graph, a linear trendline will be created for the last 3 data points where the water was allowed to cool, which can be extrapolated backwards to determine the total decrease in the temperature of the water due to a loss of energy to the surrounding environment during the combustion of the fuel. The difference between the highest and lowest temperature values will then be used to calculate the total change in the temperature of water during the combustion of the fuels. Below, one representative graph and

The objectives of this experiment are to apply the concept of thermal resistance between a heated surface and its surrounding, and to study the effects of attaching fins to the surface. Analysis was conducted on 3 different surfaces, a flat plate, a flat plate with 1 fin, and a flat plate with 2 fins. The experiment setup is displayed in Figure 1 below. It consists of placing the blower next to the black cardboard with air flow direction parallel to the cardboard, and using the blower to force convection on the electronically heated plate, with 0, 1, or 2 fins. Each plate and fin(s) are thermocouple embedded. Temperature data was taken using the LABVIEW program in the lab and photos are taken by using IR Cameras. Some assumptions for this

The main aim of the project was to determine the feasibility of converting already existing fans used by Aroma as seen in Figure 4 (own design) into energy generating wind turbines shown in Figure 5 (own design). The aim was then to:

Heat transfer processes are prominent in engineering due to several applications in industry and environment. Heat transfer is central to the performance of propulsion systems, design of conventional space and water heating systems, cooling of electronic equipment, and many manufacturing processes (Campos 3).

Hypothesis: To verify the relationship between mechanical energy and heat; that is, to find the relationship between energy associated with motion and the energy transfer between objects at different temperatures.

The attention of the vapor absorption system is growing in the past two decades. The major two advantages are growing up this technology that is low carbon emission technology and low electrical energy required. This system is operated with the help of low heating sources like solar power, geothermal, waste heat, low-pressure steam, and it contributes significant energy conservation. Ecofriendly working fluid leads to reduce the global warming and ozone layer depletion. The following reason is also growing the research interest of the system. It is suitable for small to very large capacity. Operating cost is too less when compared with other commercial technology, and it is required very less electrical energy to operate the pump. Less maintenance cost because of heat exchangers and there are no moving parts in the system. The installation can be done in a remote area, and it is movable. The system can be operated at various cold and refrigeration ranges from -15 to 25 °C.