Cooling Tower Equipment_07.pdf

FAKULTI KEJURUTERAAN AWAM UNIVERSITI TEKNOLOGI MARA JOHOR KAMPUS PASIR GUDANG LABORATORY MANUAL COURSE

BUILDING SERVICES

COURSE CODE

ECM346

LEVEL OF OPENNESS

1

CATEGORY

PARTIALLY OPEN ENDED

DEGREE OF OPEN-ENDED (%)

100

PERIOD OF ACTIVITY

1 WEEK

TITLE

AIR CONDITIONING SYSTEM – COOLING TOWER EQUIPMENT

1.1 Introduction Students are required to find the ways & means and provide the answers to the given assignment using the group creativity and innovativeness.

In this laboratory activity, the students are required to discover the application of cooling tower operated in a building to provide comfortness for the building occupants. Cooling Tower is designed to provide an evaporative cooling system from various sources such as machinery, heated process material and building. 1.2 Objectives The objective of the laboratory activity is: To understand the concept and the principle of cooling tower used in building. PREAMBLE

1.3 Learning Outcomes At the end of the laboratory activities, students would be able to: 1. Describe the concept and factor influencing the performance of cooling tower. 2. By using a diagram, explain the operational system of cooling tower. 1.4 Theoretical Background A cooling tower is a heat rejection device, which extracts waste heat to the atmosphere though the cooling of a water stream to a lower temperature. Common applications for cooling towers are providing cooled water for airconditioning, manufacturing and electric power generation. Large office buildings, hospitals, and schools typically use one or more cooling towers as part of their air conditioning systems. Generally, industrial cooling towers are much larger than smaller buildings. Cooling towers remove heat from a building’s air conditioning system by evaporating some of the re-circulated water to cool the remainder. While all cooling towers continually reuse water, they can consume a significant percentage of a facility’s total water use. Towers that are in good condition, operated properly and are well

©FKA, UiTM, PASIR GUDANG

MAC-JUN2019

FAKULTI KEJURUTERAAN AWAM UNIVERSITI TEKNOLOGI MARA JOHOR KAMPUS PASIR GUDANG LABORATORY MANUAL maintained allow chillers to operate at peak efficiency. 2 Problem Statement

PROBLEM STATEMENT

The temperature of a space is not the only factor affecting a person’s comfortness. Even if the temperature is within an acceptable range, the space may seem warm if the humidity is too high, the airflow is too low, or warmth is being radiated to the occupants. Natural ventilation is no longer sufficient for a big-sized scale building where mechanical ventilation such as cooling tower system is essential to be installed to provide comfortness for the occupants. For that purpose, students are required to conduct a site visit to explore and understand the cooling tower system installed in UiTM Cawangan Johor, Kampus Pasir Gudang. By conducting a site visit, students are trained to develop their individual soft skills. They need to observe by the own the actual system which has been installed in a building and this may enhance their understanding on the basic operation of the system and the maintenance aspects. From the observation and discussion with the respective person who is responsible to manage the air conditioning system, the factors that affecting the performance of cooling tower, temperature, humidity of a room or space can be determined. Instruction

WAYS & MEANS

The group is required to search for any relevant information of Centralized Air Conditioning System which consist of Air Handling Unit, Chiller and Cooling tower in order to determine the operation of the system as a whole based on the observation during site visit. 4 Results, Analysis and Conclusion

RESULTS

The group will be required to prepare the technical report of the laboratory results highlighting the procedures of information gathered during the site visit, the circulation of cooling media for the system and analyze the components which may influence the performance of the system. The format of the report is left to the creativity discretion of the group.The report must be submitted 7 days after the completion of the test.

©FKA, UiTM, PASIR GUDANG

MAC-JUN2019