Industrial Cooling

During the process, generated heat needs to be removed. It is achieved by a flow of cooled or chilled water into which heat is absorbed. However a constant temperature and flow rate is required to make it happen.

• Process and factory climate control
• Building and event climate control
• Energy recovery ventilators

Energy recovery is the process of exchanging the energy contained in normally exhausted air from a building or space. Using it to treat and precondition, the incoming ambient fresh air in residential and commercial HVAC systems. During the warmer seasons the system will pre-cool and dehumidify while humidifying and pre-heating in the cooler seasons. The benefit of using energy recovery is the ability to meet the ASHRAE ventilation & energy standards, while improving indoor air quality, and reducing total HVAC equipment capacity. This technology, as expected, has not only demonstrated an effective means of reducing energy cost and heating and cooling loads, but has allowed for the scaling down of equipment. Additionally, this system will allow for the indoor environment to maintain a relative humidity of an appealing 40% to 50% range. This range can be maintained under essentially all conditions. The only energy penalty is the power needed for the blower to overcome the pressure drop in the system.

Energy Recovery Ventilator

An Energy Recovery Ventilator (ERV) is a type of air-to-air heat exchanger that not only can transfer sensible heat but also latent heat. Since both temperature and moisture is transferred, ERVs can be considered total enthalpic devices. On the other hand, a Heat Recovery Ventilator (HRV) is limited to only transferring sensible heat. HRVs can be considered sensible only devices because they only exchange sensible heat.

Throughout the cooling season, the system works to cool and dehumidify the incoming outside air. This is accomplished by the system simply taking the rejected heat and sending it into the exhaust airstream. Sequentially, this air cools the condenser coil at a lower temperature than if the rejected heat had not entered the exhaust airstream. During the heating seasons, the system works in reverse.

Instead of discharging the heat into the exhaust airstream, the system draws heat from the exhaust airstream in order to pre-heat the incoming air. At this stage, the air passes through a primary unit and then into a space. With this type of system, it is normal, during the cooling seasons, for the exhaust air to be cooler than the ventilation air and, during the heating seasons, warmer than the ventilation air. It is this reason the system works very efficiently and effectively. The Coefficient of Performance will increase as the conditions become more extreme (i.e. more hot and humid for cooling and colder for heating).

Here at Desiccant DryAir we have designed, manufactured and installed multiple ERV systems over many years.  Please call us on 01524 581500 for a quote.