A Counter Current Double Pipe Heat Exchanger Using Cnt / Water Nano Fluid

In this experiment, two Styrofoam cups and a brand calorimeter are each used to calculate heat transfer. The results will be compared to see if the something as simple as a Styrofoam cup can be used accurately as a calorimeter and produce efficient results. Using hot and cold water, the Styrofoam cup and brand calorimeter will be used to determine the heat capacity. By using the mass of the water, specific heat of water and the change in temperature, the heat capacity will be determined. The brand calorimeter and Styrofoam calorimeter

We observe the temperature of the four different flasks starting from the equal initial temperatures, every ten seconds for one samples all the way to three minutes. From the data observed, the average rate of heat loss can be derived. This is done by taking the initial and final temperature and dividing them by the number of seconds (18x as the total number of seconds is 180 and interval of 10 secs).

In an article called “Heat Transfer by conduction” by Mike Brown, it states “Thermal energy in the vibrating particles or molecules is passed on to nearby particles in a process called conduction”. This explains to us the process of conduction in which it relates to our design because when we insert the thermometer into the warm water, our goal is to keep the water warm with our cup so that once the thermometer makes DIRECT contact with the warm water, it will heat up the thermometer and give us an exact temperature.

In order to test the heat capacity of water, calorimeter test was conducted. Each liquid had an initial temperature at 21oC. As the time increased, the temperature increased. The maximum temperature of water was 23.5oC in 152 seconds. And the maximum temperature of oil was 25oC in 160 seconds.

After solving for both sides of the energy balance, the lowest heat transfer rate is taken to be the actual heat transfer value [1]. To analyze the accuracy of the theoretical energy balance to the actual heat exchanged, the percent closure can be found using, % Closure=Q_out/Q_in *100% (7) where Q_out is the energy leaving the system and Q_in is the energy entering the system. To determine the overall heat transfer coefficient for the shell-and-tube exchanger and the area of the double pipe heat exchangers, the Log Mean Temperature Difference Method, LMTD, can be used.

Using conservation of energy, the heat lost by the metal was the same as the one gained by the water/calorimeter system,

Introduction: In this experiment we will be investigating how changing the temperature of the made up solution (copper chloride dihydrate and water) will impact the rate of a reaction when aluminium foil is dropped into it. We will determine this by selecting five different temperatures: 26 degrees, 36 degrees, 46 degrees, 56 degrees and 66 degrees and seeing at which temperature the reaction between the solution and aluminium foil produces the most heat. We will be recording the before and after temperatures after 2 minutes when the aluminium foil has been placed in the solution and also the average of the temperatures, this will help us determine if a hotter or colder

The graph indicates that heat flow did undergo during the experimentation. The cold water increased in temperature, while the hot water decreased. The two liquids underwent changes in temperature until they both reached thermal equilibrium. This thermodynamics law is called the Zeroth Law of Thermodynamics. This law basically states that two bodies will naturally reach thermal equilibrium when in contact. The First Law of Thermodynamics was obeyed as well. Only heat from the warmer body went to the colder body. Heat only travels in one direction, from the hot to the cold, as can be seen from the graph.

Plate heat exchangers are clearly sorts of warmth exchangers. It capacities by exchanging the warmth starting with one liquid then onto the next through the utilization of metal plates. Contrasting it and traditional warmth exchangers, these ones are supported particularly in light of the fact that the liquids deal with bigger surface zones and are equipped for scattering to the metal plates. Basically, the methodology empowers appropriate assistance of warmth exchange as it velocities up the adjustments in temperature happening amid the procedure.

The temperature-time plot gotten by applying a lumped-parameter analysis (Equation 6) to the Aluminum cylinder was compared to the plot obtained from the thermocouple located closest to center of the cylinder. This thermocouple is chosen for comparison because it is located farthest from the heating source and will have a temperature history that differs most from an ideal lumped system. With this thermocouple, we should therefore obtain the maximum error associated with applying a

The objective of this lab is to find the heat transfer coefficient for the double pipes heat exchanger in order to determine the best configuration for the double pipes heat exchanger.

According to the flat plate collectors that were install on houses in Cyprus, the aim of this investigate project is to produce several different ideas of how the water temperature will be increased when it exiting a pipe of the collector. Also some tests will be made in computational fluid dynamics (CFD) software to come across with the best idea and an efficiency curve will be generated.

The temperature distribution will be investigated by changing the boundary conditions of the front surface and inside of the pipe to being fully insulated and later, the heat transfer coefficient will be changed from 60 to 10W/m2 with the results being recorded between changes. The differences between each changes on the model will be discussed in the results/discussion section.

The economics of industrial production, limitation of global energy supply, and the realities of environmental conservation are an enduring concern for all industries. Wherever you turn, there’s another entreaty to save energy, reduce carbon emissions and protect the environment for posterity. Pinch analysis is a tools used to design a heat exchanger networks (HEN) that reduce the energy usage. This paper will be about brief introduction for the pinch analysis, application of the second law of thermodynamics in design heat exchanger network

Thermal management in the supersonic combustion chambers subjected to high heat fluxes is vital for maintaining their integrity. At high temperatures ordinary materials cannot sustain the high heat loads. On the other hand, the prevailing high temperature gradients, necessitates the provision for expansion to avoid build of thermal stresses for the integration. Hence, thermal management needs a holistic approach encompassing the areas of material selection, heat transfer and structural integration. The current state of art research is focused on achieving this by active cooling through endothermic fuel, which is used as a coolant due to the advantages such as reduced weight and improved heat sink capacities. Particularly the space applications pose serious limitations on the weight. 1D thermo-structural hand calculations can be easy point to start with to arrive at the optimized shape of the single actively cooled channel. But the underlying assumptions and owing to the 1D nature of the such calculations, pose limitation towards understanding the behavior of the active panel as a whole and achieving the practical integration strategy. Therefore, there is need to perform 3D CFD and FEA thermo-structural analysis of the active panel structure. This paper extends upon the approach of 1D analytical material selection methodology through weight optimization followed by rigorous CFD and FEA analysis to understand and device ways for structural integration for long