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Full-Text Articles in Engineering
Validation Of A Transient Simulation Program (Trnsys), Brian F. Goldiez
Validation Of A Transient Simulation Program (Trnsys), Brian F. Goldiez
Retrospective Theses and Dissertations
Although a Transient Simulation Program (TRNSYS) has become a widely used model for simulating a solar energy system, there has not been extensive work done in validating this model with actual data. The approach used to validate this model consisted of a modular buildup of components with validation for each module. Extreme care was taken in choosing the necessary parameters to model each component. Where parameters were not given, they were either derived or reasonable values were selected based upon general conditions prevailing in Central Florida or conditions which are generally true for certain solar hot water systems. The intent …
Simulation Of Domestic Hot Water System Using Trnsys, Mohammed Shafi Uz Zaman
Simulation Of Domestic Hot Water System Using Trnsys, Mohammed Shafi Uz Zaman
Retrospective Theses and Dissertations
A Transient Simulation program (TRNSYS) was used to formulate the simulation of a domestic hot water system. Solar percent utilization and collector efficiency was observed for different set temperatures and hot water demand. The effect of hot water demand pattern on these parameters was likewise investigated. Regression analysis was used to forecast solar percent utilization with respect to set temperature and daily hot water demand.
Economic Feasibility Of Domestic Hot Water Heating By Solar Energy At Florida Community Colleges, Catherine Ann Colford
Economic Feasibility Of Domestic Hot Water Heating By Solar Energy At Florida Community Colleges, Catherine Ann Colford
Retrospective Theses and Dissertations
No abstract provided.
Analytical And Experimental Investigation Of Thermosyphon Solar Hot Water Systems, William E. Clark
Analytical And Experimental Investigation Of Thermosyphon Solar Hot Water Systems, William E. Clark
Retrospective Theses and Dissertations
A computer simulation of a thermosyphon system allowing load drawoff and non-ideal weather conditions has been developed. The model is restricted to the more common single cover, flat plate collector system. Using an analysis based on the present literature, this model calculates the energy absorbed by the collector, the temperature distribution through the system, and the corresponding flow rate. Experimental data for a non-ideal day is compared to the computer simulation. Results of this comparison indicate that the desired parameters, flow rate, collector inlet and outlet temperatures, and the mean tank temperature can be predicted by this model to within …
Analytical And Experimental Investigation Of Pumped Solar Hot Water Systems, Jeffrey B. Pearce
Analytical And Experimental Investigation Of Pumped Solar Hot Water Systems, Jeffrey B. Pearce
Retrospective Theses and Dissertations
A transient computer model of a forced circulation solar hot water system has been developed. The model allows for capacitance effects by solving the energy balances on a four node model of the solar collector. The tank model is designed to include the presence of an auxiliary heater and to allow for the nonideal condition of load drawoff. Five tests were done to validate the computer model. These tests include a comparison of the computer simulation with experimental data and a model available in the literature. The results of these tests indicate that the computer model is able to predict …
Test Methods For Evaluating Performance Of Solar Units, William Joseph Vitaliano
Test Methods For Evaluating Performance Of Solar Units, William Joseph Vitaliano
Retrospective Theses and Dissertations
This report is concerned with the performance of solar hot water units for laboratory and field use. A solar unit is defined as a system consisting of a collector, storage tank, piping system and controls. Older unites typically employ the thermosyphon principle (gravity) while more recent models use a water pump to circulate the water. Basically, the collector absorbs solar radiation and transfers thermal energy to the water flowing in the collector tubing. From the collector, the fluid is pumped to the storage tank at which point the hot water is available for usage. A literature search revealed that very …