Co-operative education involves teaching students both through formal lectures within educational institutions and placement in appropriate industrial undertakings. At the Hong KongPolytechnic, one form of co-operative education is sandwich courses. Because of the difficulty in locating appropriate and adequate placements, and the seeming ineffectiveness of the industrial training experienced, some of the departments are reverting from sandwich courses to full-time studies, or offering the option of full-time~sandwich modes. This change of structure has not been evaluated. A study was carried out to evaluate the academic and non-academic values of the system and the needs of local industries, using the building services engineering (BSE) course as a starting point. The opinion of the BSE Department staff, industrial sector, current and past students in the course were surveyed. Recommendations were discussed.
Field investigation was conducted to investigate the ventilation design and the indoor air quality in an academic services department of a tertiary institute in Hong Kong. Results of the study indicated that problems existed in the design, operation and maintenance of the ventilation system. Fresh air supply, though satisfying the recommended values stipulated in ASHRAE standard, was not adequate. Materials, fixtures and the ventilation system itself were found to be the dominant pollution sources according to which the required supply of outdoor air should be determined. Discussions on the design practices adopted by local building services engineers are included.
Rapid advances in adaptive signal processing are making active noise control products a practicable proposition. One unit available in the industry was chosen in this study to evaluate its application and effectiveness in controlling noise in ventilation systems. Its performance with aerodynamic and static noises was evaluated against the conventional duct lining approach. Experimental results indicate that the system is applicable in air-conditioning systems despite the existence of some constraints that have to be taken care of. It is proposed to use the equipment to supplement the traditional dissipative silencer for noise level control and for the achievement of spectrum balance.
Action research involves practitioners in attempting to improve
their own teaching through cycles of planning, acting, observing and
reflecting. This idea was adopted by a group of interested staff to
evaluate the industrial training in the third year of the four‐year
sandwich course, B.Eng. (Hons) in Building Services Engineering, at Hong
Kong Polytechnic. As there are foreseen difficulties in locating
suitable and adequate high quality industrial placements, research was
carried out to evaluate the effectiveness of the existing arrangement.
Assesses attitudes of BSE staff, students and industrial supervisors
towards the training. Results of the survey indicated that objectives of
the training were not wholly fulfilled. Suggestions are included to
improve the management of the training system.
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