Heat recovery ventilators Energy recovery ventilators Rotary heat exchangers Air handling units Beijing Holtop Artificial Environment Technology Co., Ltd ISO9001:2000 Approved company
ENERGY RECOVERY VENTILATION SPECIALIST Why choose Holtop as business partner Professional Holtop is dedicated to the research and technology development in the filed of indoor air quality. It is the leading company in China who professionally produces heat recovery and energy recovery ventilation systems. Completed range of heat recovery ventilation products Holtop products comprise heat and energy recovery ventilators, plate and rotary heat exchangers, air handling units and related accessorial products, which can meet various ventilation demands. Superior Quality Management Holtop is certified by ISO9001:2000 quality control system. And Holtop s test center which is approved by authorized institute ensures the stable performance of products. As a honor, Holtop is the equipment supplier for 2008 Beijing Olympic venues. Reliable Holtop has years of experience supplying heat recovery products to some large HVAC manufacturers. Superior quality, on-time delivery and allaround service has earns us a great credit to be a reliable business partner. 2
HEALTH AND ENERGY-SAVING The indoor air pollutants can effect your health seriously In the modern architecture, as the widespread use of air conditioning, the buildings become more and more tight in order to save the energy. The natural air exchange rate in the modern building has reduced significantly. It is harmful to the health of human if the air is too dreggy. In 1980, the World Health Organization officially named the diseases as Sick Building Syndrome which are caused by insufficient fresh air in the air conditioners, widely known as air conditioning sickness. Dilemma between ventilation and energy consumption To increase the fresh air is a good way to improve the air quality, but at the same time the energy consumption rises dramatically The energy consumption of HVAC takes up over 60% of the building energy consumption As to the public buildings, to condition 1 m 3 /h fresh airflow needs to consume about 9.5 kw.h energy in the whole summer Solution Holtop heat & energy recovery ventilator can expel the stale air indoor out of room, meanwhile supplying the fresh air outside into the room, by using the advanced heat/energy recovering technology, the energy can exchange taking advantage of the difference of the temperature and humidity between indoor and outdoor air. By this means, it can not only smooth away the problem of indoor pollution, but also the dilemma between ventilation and energy-saving. Energy-saving principle Energy recovery ventilation (Summer/Winter) Approximately 20% energy consumption reduction About 28% reduction in annual energy consumption of air conditioning 6% energy saving 2% energy saving Normal ventilation mode (Autumn/Spring) Pre-heat/cold control 3
Heat and energy recovery ventilator XHBQ-D1.5P~D10TP XHBQ-D15P~D20TP XHBQ-D2TH~D10TH XHBX-D2TH~D10TH XHBQ-W3T~W4T XHBX-W3T~W4T XHBQ-W6T~W10T XHBX-W6T~W10T XHBQ-G3T XHBX-G3T XHBQ-D16TC~D20TC XHBX-D16TC~D20TC XHBQ-D16C~D30C XHBX-D16C~D30C XHBQ-D40C~D60C XHBX-D40C~D60C XHBQ-L16TC~L20TC XHBX-L16TC~L20TC XHBQ-L16C~L60C XHBX-L16C~L60C XHBQ-L300C XHBX-L300C Benefits of HRV/ERV Effective Ventilation Introduces outdoor fresh air into indoors, meanwhile expels the indoor stale air to outdoor, which makes you feel the comfort of nature. High efficient energy recovery The built-in high efficient heat exchanger can recover the energy from outgoing indoor air to coming fresh air while ventilating. It can recover over 70% energy. Perfect silence design It is designed with the worldwide fashionable structure and manufactured by the accurate moldings. According to the principle of hydrokinetics, it achieves the perfect silent effect by using the micro-punch anechoic technology. Air filtration and purification The inner air filters are professionally designed to remove the pollutants of the incoming air, providing you the fresh and clean air. By-pass function By-pass function enables the unit to make natural ventilation in suitable climates, which can prolong the service life of the heat exchanger. High airproof feature and easy maintenance The heat exchanger is connected with the equipment by the in-mold rail, and embedded with the special soft and dense sealing materials. It can be drew out by hand and is easy to maintain. At the same time, it can ensure that the fresh air and exhaust air are completely separated, avoiding the cross pollution. 4
Rotary heat exchanger Rotary heat exchanger (wheel) is mainly used in building ventilation or in the air supply/discharge system of air conditioning equipment. The wheel transfers the energy (cold or heat) contained in exhaust air to the fresh air supplied to indoor. It s one important equipment and key technology in the field of construction energy-saving. Total heat exchanger Aluminum foil of this wheel is coated with 3A molecular sieve, which enables the wheel to exchange both temperature and humidity, in another word, to recover both sensible and latent heat. Sensible heat exchanger It generally recovers no latent heat unless condensing water occurs and it recovers part of the latent heat. Principle of Operation Rotary heat exchanger is composed of heat wheel, case, drive system and sealing parts. The heat wheel rotates powered by the drive system. When outdoor air (OA) passes through half of the wheel, return air (RA) passes through reversely the rest half of the wheel. In this process, about 70% to 90% energy contained in the return air (RA) can be recovered to supply air (SA) to indoor. 5
Plate heat exchanger The plate heat exchanger is one of the air-to-air heat exchangers. Outdoor air and exhaust air are separated by the plates to ensure the air tightness while transferring the heat. It has no movement parts, so it s more reliable and has longer service life. According to the airflow directions of the heat exchanger, it is categorized into crossflow type, counterflow type, and cross-counter flow type. According to the recovery functions of the heat exchanger, it is categorized into sensible heat type and total heat type. Crossflow plate heat exchanger Made by flat aluminum foils of 0.12mm thickness Two air streams flow crossly. Suitable for room ventilation system and industrial ventilation system. Heat recovery efficiency up to 80% Cross-counter flow plate heat exchanger Made by flat aluminum foils of 0.12mm thickness Partial air flows crossly and partial air flows counter Suitable for room ventilation system and industrial ventilation system. Heat recovery efficiency up to 90% Counterflow plate heat exchanger Made by flat aluminum foils of 0.18mm thickness Two air streams flow counter Suitable machine room ventilation and telecom cabinets ventilation, as well as room ventilation system. Heat recovery efficiency up to 90% Crossflow plate fin heat exchanger Sensible heat exchanger Made by aluminum foils of 0.05mm thickness Structured with flat plates and corrugated plates. Two air streams flow crossly. Suitable for room ventilation and industrial ventilation system. Heat recovery efficiency up to 80% Total heat exchanger Made by E.R. paper Structured with flat plates and corrugated plates. Two air streams flow crossly. Suitable for room ventilation system and industrial ventilation system. Heat recovery efficiency up to 80% 6
Air handling unit with heat recovery Working principle Both supply fan and exhaust fan are built inside to bring in fresh air and exhaust out the stale indoor air as well, thus to keep indoor space in natural comfort. Built-in heat exchanger (rotary heat exchanger or plate heat exchanger) transfers energy contained in the outgoing indoor air to the coming fresh air, thus fresh air is precooled or preheated. Various functional sections such as filter section, cooling/heating section, humidifying section etc. can be combined together to meet different air treatment requirements. Housing construction features Frost resisting cold bridge design Double-skin panel sandwiched with high density PU foam, thermal conductivity below 0.01999W/m, insuring high performance between -40 and +70. High mechanical strength Galvanized sheet inner skin, color steel sheet outer skin, strong steel framework, pressure endurance up to 2000Pa, suitable for large air application. High air impermeability Double inlaid sealing to join the frameworks and panels tight, minimizing air leakage. Flexible combination Designed with 102mm modulus, frameworks and panels are flexible to change according to design requirements. 7