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Big business buildings1/2/2024 ![]() ![]() A commercial building could contain one or more of many types of businesses, including retailers, restaurants, offices or manufacturing. Building layout, the height of the facility, and rooftop space should all be considered when deciding the best configuration.Commercial buildings are an important part of doing business, both for those who own them and for those who rent them. Although there are various AC energy saving tips, it is important to consider the type of HVAC unit you need. HVAC configuration is an important design choice for commercial buildings as it represents a significant cost in the longer term. There are different types of air conditioning systems for commercial buildings. However, these systems are already among the most efficient systems on the market. Just like the other systems, like central air conditioning, adding speed control to the pumps and funds improves efficiency. The boiler makes up for the difference if more heating is required. If more cooling is required, the tower dispels extra heat. The heat pumps either release or absorb heat in loads that balance out against one another. Based on the refrigeration cycle, heat pumps can operate in separate areas of a building and switch between modes as required. These systems work the same way as air conditioners. Our experts here at Cool Air Today say if a building is looking for the best choice for versatility and efficiency, water-source heat pumps should be the option chosen. Water-Source Heat Pump System With A Cooling Tower And Boiler These systems offer more efficiency than VAV systems and work better for multi-story buildings. If the system has four pipes, or two pipes for each mode, heating and cooling can be done at the same time. This means the entire building must be heating or cooling at the same time. Sometimes, the chiller and boiler will share a circuit. The heat will be exchanged between water and the air at air-handling units. If the system is heating, the water passes through an electric, gas, or oil-powered boiler. If the system is cooling, heat is extracted from the cold water and dispels it into a secondary loop connected to the cooling tower. In this type of system, water is used as a medium to deliver or absorb heat as the water circulates through units provide the required airflow to the building. VAV systems aren’t practical for multi-story buildings as they have limited roof space and other systems are better for vertical distance. However, these systems are good for facilities with large roofs compared to the indoor space. ![]() VAV systems see reductions in efficiency if conditions are at a partial load. The dampers are controlled by the temperature set for each zone of the building and will open if the optimal temperature is reached. Dampers open and close based on cooling and heating needs. Regardless of which mode of operation is in use, fans blow air into ducts that distribute it throughout the building. Economizers help the condenser by sharing some of the cooling load. If the building is in an area where the system needs to provide air conditioning with little humidity outside, an economizer can be added. These units include a condenser for the air conditioning, and either a gas or electric boiler to heat the building. ![]() Variable-air-volume, or VAV, systems typically have packaged rooftop units as well. ![]()
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