Page 71 - Industrial Ventilation Design Guidebook

3 6 CHAPTER 3 DESIGN METHODOLOGY OF INDUSTRIAL AIR TECHNOLOGY

Step 5: Design of Control Strategy
» Design control strategy for acceptable systems in order to handle
different situations (seasonal, process variations).
• As in step 4, if none of the acceptable systems can handle
different situations, return to calculation of Total Loads to
consider whether there is something that can be done with the
total loads,

Step 6: Comparison Calculation of Acceptable Systems
Calculate costs, consumption of goods (energy, electricity, etc.} } and possi-
ble heat recovery of acceptable systems.

Step 7: Selected System
Select the optimal system based on the comparison calculations.
The tools include:
• Zone models
• CFD
• Energy simulation

3.12 SELECTION OF EQUIPMENT

Based on technical specifications, acceptable equipment is identified. The final
selection is made on the same basis as in Selection of System. The decision tree
is shown in Fig. 3.13.
Explanations of Fig. 3.13

Step /: Performance Characteristics
Define performance characteristics based on system selection.
Step 2: Alternative Equipment
Select alternative equipment for comparison.

Step 3: Selection of Acceptable Equipment
• Compare different equipment to performance characteristics.
• Accept equipment that fulfills the characteristics for further
comparison.
• If no acceptable equipment exists, return to selection of system to
reconsider system selection with available equipment.

Step 4: Feasibility Comparison of Acceptable Equipment
Calculate costs, consumption of goods (energy, electricity, etc.), and possi-
ble heat recovery of acceptable systems.

Step 5: Selection of Equipment
Select the optimal equipment solution based on the comparison calcula-
tions.