Coursecode: wb4424
Coursename: Indoor Climate Control Design

ECTS creditpoints: 4

Faculty of 3mE

Lecturer(s): Paassen, prof.dr.ir. A.H.C. van

Tel.: 015 278 66 75

Catalog data:
Heat exchangers in heating, ventilating and air conditioning (HVAC): capacity of heat exchangers with dry surface; heat exchangers with wet surface (wet air cooler) and with partly wet surface; calculation of part load temperature efficiency; calculation of the capacity of cooling towers; simulation of a heat exchanger; control of a heat exchanger. Control of heating and air conditioning systems: comfort and control requirements; interaction between building, outdoor climate and installations; control of the climate installations; terminal units in rooms and their control; control systems for various indoor climate systems; detailed analyses of the control of heat exchangers and Building Management Systems to bring in harmony the various components. Two exercises should be made and defended at the oral examination. 

Course year: MSc 1st year
Semester: 2A / 2B
Hours p/w: 2
Other hours: -
Assessment: Oral
Assessm.period(s): By app.
(see academic calendar)

Prerequisites: wb4426

Follow up:

Detailed description of topics:
The course is split in to 2 modules:

Components and ventilating and air conditioning (HVAC) systems:

• The theory of heat and mass transfer is given. Based on the theory various design methods for heat exchangers are derived ranging from simple hand calculation to detailed models.
• Various heat exchangers applied in heating, ventilating and air conditioning (HVAC) systems are considered: capacity of heat exchangers with dry surface; heat exchangers with wet surface (wet air cooler) and with partly wet surface; calculation of part load temperature efficiency; simulation of a heat exchanger and control of a heat exchanger. The same is done for cooling towers.
• The dynamic performance of heat exchangers is considered in order to design stable control. All kind of control algorithms are considered.
• Various hydraulic systems for the supply and control of warm and cold water are discussed. Attention will be paid of the impact of their design on the control performance.

Control of components and total system.

• Control of heating and air conditioning systems: comfort and control requirements; interaction between building, outdoor climate and installations; control of the climate installations; terminal units in rooms and their control; control systems for various indoor climate systems; detailed analyses of the control of heat exchangers and Building Management Systems to bring in harmony the various components.
• Moreover, advanced systems are discussed such as: the Mollier based control strategy, predictive control for saving energy and reducing capacities.

Two assignments should be made and defended at the oral examination:

Problems encountered by the students in making these assignments will be discussed at regular moments during the course.

Course material:

• Indoor Climate Control Design. It can be downloaded from blackboard. Also the original version in Dutch can be found on blackboard. Examples and additional data for the exercises can be found on Blackboard.

References from literature:

• After each chapter of the course material a literature list is given. It can be used to get more information or to consult the original source. Moreover these lists serve as a good example of good behaviour: always refer to your sources!

Remarks (specific information about assesment, entry requirements, etc.):

Goals:

The student must be able to:

1. calculate the seize of all kind of heat exchangers used in air conditioning (detailed knowledge about heat and mass transfer is needed)

2. define the dynamic performance of heat exchangers in order to design stable control

3. determine the impact of the hydraulic system on the performance

4. combine the various heat exchangers together with fans, filters and sound attenuators in order to realise a desired installation

5. tune the control system

Computer use:

• Electronic version of the Mollier diagram (can be downloaded)
• User friendly design program Enerk can be used to design control strategies (can be downloaded)
• Excel for making the calculations and presentations.

Laboratory project(s):
no

Design content:

1) Two assignments should be made.

Design of an air cooler. Calculate the total surface of the air cooler needed to condition the air supplied to the building. Do it for various water outlet temperatures (8,10,12,14,16). Show how the wet and dry parts of the air cooler are changing with the assumed outlet temperature.

2) Design an air handling installation and its control system of one of the exhibition halls of KunstHal in Rotterdam. Here all the aspects discussed during the course will emerge.

Percentage of design: 70% dedicated to design of components