HEATING AND AIR CONDITIONING 1

SHE Level 3
SCQF Credit Points 20.00
ECTS Credit Points 10.00
Module Code M3H221915
Module Leader Krystyna Curtis
School School of Computing, Engineering and Built Environment
Subject Civil Engineering and Environmental Management
Trimester
  • A (September start)

Pre-Requisite Knowledge

Year 2 modules for BEng Building Services Engineering or equivalent.

Summary of Content

This unit applies psychrometric principles to the design of practical air conditioning systems. A knowledge of the control and comfort parameters is given so that the restraints on energy saving is appreciated. The basic principles of thermodynamics and heat transfer are also applied to practical heating systems.

Syllabus

Climatology and Comfort. Selection of summer and winter outside design conditions using CIBSE method, frequency of occurence method, summer isotherms and outdoor air condition envelope. Selection of internal temperatures, humidity and fresh air values necessary for design. Air Conditioning. Design of all-fresh-air and recirculation single zone systems. Year round operation of the above-mentioned systems, including typical control strategies. Multi-zone systems using constant air mass flow and terminal reheaters. Control and year-round operation of multi-zone systems. Ventilation: Air infiltration and natural ventilation. Wind and stack effects. Calculation of natural ventilation rates. Decay equation. Mechanical ventilation - supply, extract and balanced ventilation systems. Room air diffusion. Characteristics of air terminal units. Siting of supply and exhaust air terminals. Industrial ventilation and local exhaust systems. Techniques for measuring air change rates in buildings. Displacement ventilation. Clean rooms. Air Cleaners and Filtration: Natural airborne contaminants. Filter efficiency. Types of air cleaning devices. Testing of air filters. Filter selection. Heating systems. Characteristics of heat emitters, radiators, natural convectors and fan convectors. Underfloor and ceiling radiant heating systems. Low-temperature hot water heating systems. Domestic and commercial applications. One pipe and two pipe systems. Pressurized hot water heating systems. Steam heating systems. Warm air heating systems. Estimation of plant capacity. Convective and radiant heating systems. Environmental temperature method. CIBSE method using dry resultant temperature.

Learning Outcomes

The Engineering Benchmarks A7,B1,B2,B3,B5,B7,C1,C2 and C3 as specified in the BEng Building Services Engineering Specification Document apply to this module.On successful completion of the module, students should be able to:- Select outside design temperatures from meteorlogical data (B1)- Define and evaluate the design parameters necessary to create a comfortable internal environment (B1)- Design and understand the operation of all-fresh-air conditioning systems for year round operation (B2,B3,B7)- Design and understand the operation of recirculation air conditioning systems for year round operation (B2,B3.B7)- Understand basic control systems for all-fresh-air and recirculation air conditioning systems (A7)- Specify appropriate ventilation systems for a range of building types (A7,B5,C2)- Apply the principles of heat transfer to assess the emission from various designs of heat emitters (B1,C1)- Know the various designs of low, medium and high pressure hot water systems and their applications (C3)- Solve problems related to convective and radiant heating systems (B2,B7)

Teaching / Learning Strategy

A sound knowledge of thermodynamic and fluid mechanics principles is required for this unit in order to develop the ability to design and analyse complex systems. Emphasis will be placed on the design of real systems, with courseworks and tutorials continuing this theme. Learning and teaching strategies will be developed and implemented, appropriate to students' needs, to enable all students to participate fully in the programme.

Indicative Reading

Martin P.L. et al Faber and Kell's Heating & Air Conditioning of Buildings, Architectural Press, 2001. CIBSE Guide A, Environmental Design, 2006 Mechanical Services of Buildings, Eastop & Watson, Longman 1992

Transferrable Skills

The Engineering Benchmarks D1,D2,D5,D6 and D8 for transferable skills as specified in the BEng Building Services Engineering Specification Document apply to this module. The student will develop abilities to apply basic principles to practical problems, to design systems with a view to energy efficiency and environmental considerations and to extract the appropriate data from guides and apply this to practical systems. (D1,D2,D5,D6,D8)

Module Structure

Activity Total Hours
Tutorials (PT) 12.00
Lectures (PT) 36.00
Independent Learning (PT) 128.00
Seminars (PT) 6.00
Assessment (PT) 18.00

Assessment Methods

Component Duration Weighting Threshold Description
Exam (Exams Office) 2.00 60.00 35% Exams office examination
Coursework 2 n/a 20.00 35% Design Exercise
Coursework 1 n/a 20.00 35% Take-home exercise