Module Details

Module Code: ENVI8002
Title: Psychrometric Design
Long Title: Psychrometric Design
NFQ Level: Advanced
Valid From: Semester 1 - 2016/17 ( September 2016 )
Duration: 1 Semester
Credits: 5
Field of Study: 4220 - Environmental Science
Module Delivered in: 1 programme(s)
Module Description: This module addresses issues relating to the design of systems and equipment to deliver a specified cooling load.
Psychrometric, mass flow and energy balance equations are applied to system and component analysis. Optimisation of design conditions is undertaken to minise the load on air conditioning plant.
 
Learning Outcomes
On successful completion of this module the learner will be able to:
# Learning Outcome Description
LO1 Apply engineering science fundamentals to develop mass flow and energy balance equations for psychrometric analysis.
LO2 Select and manipulate standard psychrometric processes to achieve a specified design state
LO3 Optimise design conditions to minimise the load on air conditioning plant.
LO4 Apply design conditions and system operating parameters to design components of an air conditioning system.
Dependencies
Module Recommendations

This is prior learning (or a practical skill) that is strongly recommended before enrolment in this module. You may enrol in this module if you have not acquired the recommended learning but you will have considerable difficulty in passing (i.e. achieving the learning outcomes of) the module. While the prior learning is expressed as named MTU module(s) it also allows for learning (in another module or modules) which is equivalent to the learning specified in the named module(s).
Incompatible Modules
These are modules which have learning outcomes that are too similar to the learning outcomes of this module. You may not earn additional credit for the same learning and therefore you may not enrol in this module if you have successfully completed any modules in the incompatible list.
No incompatible modules listed
Co-requisite Modules
No Co-requisite modules listed
Requirements

This is prior learning (or a practical skill) that is mandatory before enrolment in this module is allowed. You may not enrol on this module if you have not acquired the learning specified in this section.
No requirements listed
 
Indicative Content
Properties of air and water mixtures
Composition of air, gas laws, saturation vapour pressure, percentage saturation and relative humidity, enthalpy, dew point, calculation of properties from first principles, determination of properties from tables and charts.
Psychrometric processes
Sensible heating, sensible cooling, mixing of air streams, dehumidification, contact factor, bypass factor, adiabatic humidification, isothermal humidification, water treatment for humidification, humidification requirements in industry, cooling and dehumidification with reheat, pre-heat and humidification with reheat, mixing and adiabatic saturation with reheat
Design supply air state
Derivation of sensible and latent heat equations, derivation of specific heat capacity of humid air, derivation of heat gains from fan power, selection of supply air states to avoid wasteful reheat.
Humidification
Psychrometrics of humidification, methods of humidification, water treatment for humidification, absorption drying
Module Content & Assessment
Assessment Breakdown%
Coursework20.00%
End of Module Formal Examination80.00%

Assessments

Coursework
Assessment Type Other % of Total Mark 20
Timing Week 10 Learning Outcomes 1,2,3,4
Assessment Description
Students shall submit solutions to a number of numerical based design questions
End of Module Formal Examination
Assessment Type Formal Exam % of Total Mark 80
Timing End-of-Semester Learning Outcomes 1,2,3,4
Assessment Description
End-of-Semester Final Examination
Reassessment Requirement
Repeat examination
Reassessment of this module will consist of a repeat examination. It is possible that there will also be a requirement to be reassessed in a coursework element.

The University reserves the right to alter the nature and timings of assessment

 

Module Workload

Workload: Full Time
Workload Type Contact Type Workload Description Frequency Average Weekly Learner Workload Hours
Lecture Contact Course content Every Week 4.00 4
Independent & Directed Learning (Non-contact) Non Contact Student study and research Every Week 3.00 3
Total Hours 7.00
Total Weekly Learner Workload 7.00
Total Weekly Contact Hours 4.00
Workload: Part Time
Workload Type Contact Type Workload Description Frequency Average Weekly Learner Workload Hours
Lecture Contact Lecture Every Week 4.00 4
Directed Learning Non Contact Study Every Week 3.00 3
Total Hours 7.00
Total Weekly Learner Workload 7.00
Total Weekly Contact Hours 4.00
 
Module Resources
Recommended Book Resources
  • W.P. Jones. (2001), Air Conditioning Engineering, 5th. Butterworth Heinemann, Oxford, [ISBN: 0 7506 5074 5].
  • CIBSE. (2006), A Guide - Environmental Design, 7th. CIBSE, London, [ISBN: 1-903287-66-9].
  • CIBSE. (2012), Practical Psychrometry, CIBSE, [ISBN: 978-1-906846-26-8].
  • CIBSE / HEVAC Humidity Group. (2012), Humidification, CIBSE, [ISBN: 978-1-906846-25-1].
This module does not have any article/paper resources
Other Resources
 
Module Delivered in
Programme Code Programme Semester Delivery
CR_EBENS_8 Bachelor of Engineering (Honours) in Building Energy Systems 7 Mandatory