Assessment of pile load capacity

Dissertant

Walid, Muhannad Qahtan

University

University of Technology

Faculty

-

Department

Department of Building and Construction Engineering

University Country

Iraq

Degree

Master

Degree Date

2006

English Abstract

The objectives of this research is to analyze and stud ; experimentally the effect of outdoor air temperatures on the instruments air-conditioner unit performance (compressor, condenser, condensing unit, evaporator, and complete system).

Graphical and mathematical analysis is performed on experimental results as well as evaluation ; carried out in order to compare graphical analysis results against mathematical analysis results.

Developments are done on the air-conditioner unit to fulfill research goal, an auxiliary air flow heaters inside evaporator enclosure is used a varying evaporating temperature.

The other development is using twc auxiliary air conditioning systems at varying outdoor air temperatures first is Cussons air conditioning unit which supplying air temperature the range of (180057°C), and second is the refrigeration test bench which gives low outdoor air temperature in the range of (12.1°C-14.6°C) The effect of outdoor air temperature results shows that the peak value of refrigerating capacity of 3.29k \ v and COP of 2.55 occurs at If °C outdoor air temperature, and minimum value of compressor power consumption of 1.29kw occurs at the same air temperature.

The result? also show that when outdoor air temperature increases from (35.6°C-51°C) ; the refrigerating capacity decreases to about 17.3 % and the compressor power consumption increases to about 11.5 %.

The graphical analysis results obtained from experimental curves show an increase in refrigerating capacity, compressor power consumption, and heat rejection rate when evaporating temperature increases.

Balancing points for condensing unit and complete system Performance are obtained at 45°C ambient temperature.

The mathematical analysis results are obtained from computer program using compressor, condenser, and evaporator performance equations (obtained experimentally).

Balancing points for condensing and complete system performance occurs in a similar manner to the graphical analysis results, and less than about 0.3 % to 10 % in comparison with heat rejecting rate to condensing unit.

Main Subjects

Civil Engineering

Topics

• Mathematical models
• Air conditioning

• APA
• MLA
• AMA

Language

English

Data Type

Arab Theses

Record ID

BIM-305904