- EASY WATER THERMODYNAMICS CALCULATOR HOW TO
- EASY WATER THERMODYNAMICS CALCULATOR MANUAL
- EASY WATER THERMODYNAMICS CALCULATOR PRO
There is more description on each of the system types. The available options for system types are (1) split system, (2) air cooled chilled water and (3) water cooled chilled water. Second, you need to choose your system type.
EASY WATER THERMODYNAMICS CALCULATOR MANUAL
Please only override the option after reading this manual in order to understand how each input affects your analysis. If you feel that your building cannot be characterized by one of the options, then you can override the drop down menu. There are certain inputs that are from a drop down menu and contain only a set amount of options. These inputs are the minimum amount of information necessary to produce a reliable analysis on your HVAC requirements. When using this calculator, first you should enter your building inputs. This book provides you more background knowledge on inputs (Section 4.0) and understanding and interpreting the outputs (Section 5.0). This book should be used in conjunction with the excel spreadsheet titled HVAC Rule of Thumb Calculator.
EASY WATER THERMODYNAMICS CALCULATOR HOW TO
Section 3.0: How to use the HVAC Rule of Thumb Calculator SEER: The Seasonal Energy Efficiency Ratio or SEER is similar to EER, except manufacturers' equipment are tested at multiple conditions for various seasons. For cooling EER calculations, all manufacturers' equipment are tested at 95 F DB outdoors and 80 F/50% RH indoors. The amount of cooling or heating provided is a function of the outdoor and indoor conditions. The conversion from EER to kW/ton is shown below. This change in heat rejection from air to water greatly improves the efficiency because the heat transfer is much better with water due to its increased heat capacity.ĮER: The Energy Efficiency Ratio or EER is the ratio of the total cooling or heating Btu/h to the total input power in watts. In the first figure, you can see that the heat rejection at the evaporator and condenser change from air to water as you move from split system to water cooled chilled water system.
First, you need to understand that the efficiency of air conditioners in the refrigeration cycle is greatly dependent on the heat rejection provided at the evaporator and condenser. There are two main sets of units that should be discussed in more detail, (1) EER and (2) SEER. Table 1: This table shows a list of the popular unit conversions applicable for this calculator. However, this guide focuses exclusively on the USCS. There are two calculators, (1) one that focuses on United States Customary System Units (USCS) and another on (2) International System of Units (SI).
EASY WATER THERMODYNAMICS CALCULATOR PRO
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Also by providing electrical values for the equipment, the electrical engineer can also plan for utility service, transformers and panels.įigure 1: The three systems available in this calculator are the (1) split system, packaged A/C, (2) air cooled chilled water and (3) water cooled chilled water. This will help you to select equipment, space plan for any mechanical rooms and ceiling space and create a budget. The HVAC systems analyzed in this calculator include (1) split systems/packaged A/C, (2) air cooled chilled water systems and (3) water cooled chilled water systems.
The calculator uses the building square footage, building usage type and building shape to automatically determine the maximum and minimum overall tonnage and electrical usage of the equipment for multiple HVAC systems. After designing a multitude of HVAC systems for all sorts of buildings, you should be able to It takes years of experience to be able to quickly select an HVAC system type, size the HVAC system and cost the HVAC system, with limited information. At these early stages, the space changes very quickly and the owner and/or architect need immediate feedback to be able to ensure that there is adequate space for mechanical equipment and there is sufficient funds. During the early stages of HVAC design, it is important to be able to quickly determine the overall size of an HVAC system in order to assist the owner and/or architect space plan and determine rough costs.
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