Highest energy efficiency. Extensive use of renewables. Reduced noise emissions.

Regardless of the sector, environmental sustainability has become an undeniable business imperative. Global warming from carbon emissions, increasing sea levels, and pollution are increasing stakeholder pressure on companies to take an active role in finding innovative solutions. On average the HVAC system consumes 45% of a building’s electricity and historically fossil fuels have been used for gas heating or electricity for heating and cooling, which produce excessive greenhouse gases.

Mitsubishi Electric Hydronics & IT Cooling Systems offers quality cooling and heating solutions with the highest energy efficiency and extensive use of renewables. Innovative application of state-of-the-art energy reduction technologies and high performances at full and partial loads are only part of the picture, all MEHITS’ solutions run 100% on electricity, which directly reduces the use of fossil fuels and C0₂ emissions associated with running HVAC and IT cooling systems. Additional renewable sources such as solar, wind, and photovoltaic can be integrated into as well to significantly lower or even eliminate greenhouse gas emissions.

Advanced heat recovery and geothermal heat pump units further provide renewable energy options for heating and cooling various applications. For example, geothermal heat pumps move heat energy from a building into the Earth (to cool the building) and out of the Earth (to heat the building) depending on seasonal demands. Geothermal heat pumps are increasingly important as a renewable technology because they reduce the total annual energy loads associated with heating and cooling, and the peak electric demands in summer and winter.

Emissions from fossil fuels worsen air quality, which exacerbates breathing problems such as asthma and bronchitis, switching to cleaner HVAC technologies, such as air handling and rooftop units can improve overall air quality.

In the IT sector, managing heat waste and conserving water are equally important as obtaining electrical power from renewable energy sources. In data centers, 50% of the electricity consumed in by the IT equipment and 45% is consumed by the cooling system. More than 98% of this electricity is released as heat. Waste heat can be actively reused, and a data center becomes a closed-loop heating system with no waste.

An excellent example of this is Fortum, a Finnish energy company that utilizes the waste heat from Ericsson’s data center to supply a nearby district heating network. MEHITS supplied two water source heat pumps with low HFO refrigerant, that are used to cool the data center. The facility currently generates between 10,000-15,000 megawatt-hours of heat waste annually, which is redirected into the Kirkkonummi district heating.

To conserve water in IT environments, a closed water-cooling system can be utilized in conjunction with a highly efficient air-cooled free-cooling chiller technology. The use of free cooling is currently one the most prominent ways to make data centers more efficient and can reduce carbon emission by up to 80%. In addition, if evaporative cooling is incorporated to a basic free cooling system, the air temperature is lowered before it passes through the cooling coils. Thus, extending the free-cooling functions to a higher air temperature, and increasing the mechanical cooling efficiency due to the lower condensing pressure.

The technologies used to heat and cool our offices and businesses are changing. Thus, the use of the above-mentioned solutions are increasingly becoming a priority as part of the ongoing movement toward net zero energy. As the use of renewable technologies increases, we will also continue to increase the efficiency of our heating and cooling systems to provide better well-being and increased sustainability.