JAPAN – MITSUBISHI HEAVY INDUSTRIES LTD (MHI) has launched the new KXZ series of air-conditioning systems in multi-split inverter for applications in local offices as well as large-scale facilities for foreign markets.

This new series of air conditioners offers greater energy savings through better efficiency and diverse operational controls. The addition of this new equipment will expand the range of company products and improve basic performance.

The output capacity of the KXZ series is between 10 and 20 horsepower (HP) within the basic units and up to 60 HP for systems combining three units.

The new series maintains the basic configuration of Mitsubishi´s current models, but will enable them to gain a better position in the market due to increased reliability. The new series of air-conditioners have improved heat exchangers and newly developed compressors to achieve greater efficiency. New compressors (¹) equipped with concentrated winding motors reduce the power loss in the motor coils. The adoption of a multi-system discharge port in the compressor mechanism eliminates the power loss caused by the excessive compression and provides energy saving advantages – particularly in the evaluation of seasonal efficiency.

As a result of these improvements, the KXZ series has an additional 40% of efficiency according to an ENERGY EFFICIENCY REPORT (²) and greater heating or coefficient of performance efficiency of approximately 8% (³) compared to the current models.

The basic performance of the KXZ series has also been improved, offering a wider operating temperature range than current models. The cooling operation range is currently at 46 ° C DB (dry bulb temperature) instead of 43 ° C DB. It can deal with the large-scale building installation requirements. The new models also accommodate differences in height between the indoor and outdoor units. This is possible by extending the limit length from 50 m with current models to 70 m (when installing the outdoor units above the indoor units).

The new series of KXZ also promotes energy savings by optimizing the provided capacity according to the specific heat needs of each room. This method of control of the newly developed capacity provides both energy savings and comfort in rooms of individual users.

Mitsubishi continues to develop its products to facilitate their use and help save energy. This includes the field of air conditioning for commercial lighting and air conditioning systems for building applications in order to expand the company’s business in the field of air conditioning.

Notes
1- concentrated coil motors are installed in the outdoor units 10, 12, 18 and 20 CV.
2- ENERGY PERFORMANCE REPORT (CEAR) is a performance indicator calculated by the cooling capacity division (kW) of electricity consumption (kW). The higher the REE value is, the more effective is the energy saving level.
3- The coefficient of performance (COP) is the ratio of useful energy output of a system with respect to the system power consumption. Similar to REE, in the case of heating, the COP value is calculated by dividing the heating capacity (kW) of electricity consumption (kW). The higher the COP of a system is, the more efficient the level of energy saving is.