ACs with Lossnay ventilation, protection against PM 2.5

The necessity of ventilation can be analysed with rising unhealthy indoor air, which carries thousands of contaminants, including moisture, CO2, formaldehyde, nitrogen dioxide, odors, solvents (discharged from materials), aerosols (airborne particles), and VOC’s (volatile organic compounds) and chemicals

The rise of PM 2.5 and other air pollutants is a big concern for the inhabitants of various cities in India. Extreme weather, pollution, and poor air quality are the primary factors of many air-borne diseases across the country. The necessity of ventilation can be analysed with rising unhealthy indoor air, which carries thousands of contaminants, including moisture, CO2, formaldehyde, nitrogen dioxide, odors, solvents (discharged from materials), aerosols (airborne particles), and VOC’s (volatile organic compounds) and chemicals. These contaminations provide a breeding ground to many airborne microorganisms, primarily responsible for many types of allergies and, of course, cold and flu and causes structural damages as well. Thus, the objective of providing proper ventilation alongside air conditioning in residential and commercial buildings is critical, so that people can live and work in a comfortable environment.

To safeguard people from extreme temperature and pollution, and to enhance air quality, Mitsubishi Electric has introduced Lossnay Ventilation System in its air conditioner series. Developed and refined over the past 30 years, the LOSSNAY system has perfected the recovery of waste energy. The units reduce overall energy costs by extracting stale air, recovering the heating or cooling power and hence converting them into either warm or cool fresh incoming air. Lossnay system works on a basic principle, “The remarkable technology that permits the intake of fresh air with minimal loss to indoor temperature is known as the LOSSNAY Core.” The cross-flow, plate-fin structure of the energy-recovery unit along with a specially processed diaphragm keep supply and exhaust air separate, ensuring that only fresh air is introduced to the indoor environment, while also allowing for the efficient transfer of heat. By utilising this energy, the LOSSNAY system can save up to 30 per cent on initial capital costs of heating and cooling plant. It helps to eliminate the problem of hot & cold air, adding to the expense of operating system with original energy-recovery technology. This further uses the heat of the stale indoor air to be expelled to either heat or cool the incoming fresh air to a temperature much closer to the existing indoor air. This process reduces the load on the air conditioning system without cutting off the supply of fresh air.

Lossnay Ventilation System assures the most effective ventilation process. The history of Lossnay is fascinating; a MELNAK engineer was playing with his granddaughter when he noticed that the piece of paper by which they were playing was releasing heat energy. And in 1970, for the very first time, paper was used for effective heat exchange mechanism in air conditioners, and the technology called Lossnay. Besides keeping the room fresh with continuous ventilation mechanism, which results in 0.35–0.50 ach, the additional intermittent ventilation feature in Lossnay blows away the high concentration pollutants at the rate of 8–15 ach whenever required. These high concentration pollutants usually emanate from bathroom and kitchen areas.

Lossnay offers optional filters, PZ-RFP-E-Series for LGH-RX5 and GUF-Series and VL-100U5-E, which are designed to remove approx. 95 per cent of airborne particulates which are 2.0µm or larger. The air volume level can be set hourly (max 8 times) and weekly. One can pre-set air volume according to the predictable requirement so that Lossnay can automatically operate at only necessary air-speed at the specified period, which saves power consumption while maintaining the indoor air quality. Also, once the weekly timer has been set, no switching on-off is required.

Lossnay’s automatic damper open/close function, open/close control via external devices is useful in delivering a “By-pass” ventilation system that is suitable to the installed environment. In addition to the conventional extra high, high, and low modes, an extra low mode is added to provide a more dynamic range of air volume settings and versatility in a variety of installation environments, yielding much better energy conservation. Using a simplified timer function, it switches to extra low operation when the operation stop button is activated, and it is accordingly possible to implement 24-hour energy conservation ventilation. Lossnay also provides an option to connect ducts in two different directions (outdoor air, east airside). Besides, energy conservation performance has been improved not only by reducing the air conditioning load associated with ventilation, but also by facilitating humidity penetration through the omission of both high and low concentration contaminant. It offers the industry’s best total heat exchange efficiency.

Solutions catered by Lossnay ventilation system for enhanced air quality:
• Best for smog and pollution-afflicted cities of India such as Delhi, Agra, Faridabad, Gurgaon, Kanpur, Lucknow, and Varanasi.
• Filtering the outside air before bringing it into your home/office is a solution to reduce your exposure to air pollution.
• In Lossnay, the superior heat-transfer and moisture permeability of the special paper assure highly effective total heat exchange (temperature and humidity).

Authored by:
Yozo Ito
Director and Business Unit Head, Air Conditioners
Mitsubishi Electric India Pvt. Ltd.