Why should you opt for ENTHALPY. Wheels for your. AHUs. ERVs. (Energy Recovery Ventilators) (Air Handling Units) from

Transcription

1 Why should you opt for ENTHALPY Wheels for your AHUs (Air Handling Units) & ERVs (Energy Recovery Ventilators) from

2 Benefits of an ERV (Energy Recovery Ventilator) over a HRV (Heat Recovery Ventilator)

3 IEQ Indoor Environment Quality Indoor Environment or Quality of Indoor Air i.e. Invironment impacts comfort Health productivity and perception of quality of the space cannot be ignored any longer. IEQ norms world wide requires more ventilation of conditioned space. HRVs are installed to provide the required ventilation. However, they are not really able to meet IEQ needs why so?

4 Why ERVs and not HRVs? Energy Vs. (Latent + Sensible Vs. Heat Only Sensible) Increased ventilation results in high humidity levels (a side effect), especially in tropical countries... where latent loads are 2-3 times the sensible load Increase in the latent load tremendously. Thus, air-conditioning equipment is unable to handle the situation resulting in increased humidity levels.... design of mould and mildew growth. Mould & mildew growth is directly related to the level of humidity inside the conditioned space. Thus, maintenance of the right level of humidity is of paramount importance.

5 Optimum Humidity Ranges Decreased in Bar Width Indicate Decrease in Effect Optimum Zone Bacteria Viruses Fungi Mites Respiratory infections* Allergic Rhinitis and Asthma Chemical Interactions Ozone Production 10 *Insufficient data above 50% R.H. Source: Sterling: ASHRAE Percent Relative Humidity 80 90

6 Relative Humidity Guidelines Relative Humidity Level Description 0% - 30% Most fungi will not grow at these humidities. 40% - 55% Optimal Building Humidity for all parts of the occupied space, chases, dropped ceilings, plenums and behind drywall. 60% - 70% Approaching optimal range of humidity for growth; mold growth likely in such areas. > 70% Optimal humidity levels for most fungal growth. > 90% Typical humidity level downstream of cooling coils during cooling season without reheat. (Unavoidable tempering condition due to cooling process. Mixing and off cycles restore RH to acceptable levels.)

7 Benefits of ERVs over HRVs Energy Recovery Ventilators (ERVs) recover both sensible and latent loads An ERV, exchanges the contaminated room air with fresh outdoor air, in the process recovering the energy from the exhaust air stream. The ERV consists of two blowers and an energy recovery device. The two blowers run continuously to exhaust the room air and replace it with an equal amount of fresh outdoor air. The energy recovery device exchanges energy between the two counter flowing exhaust and supply air streams pickings up the sensible or both sensible and latent heat from the cooler air stream and transferring to the warmer air stream or vice versa depending on the conditions. Helps Designers, contractors, building owners and operators to meet IAQ Standard ASHRAE 62 and conserve energy Enable ASHRAE 62 specified ventilation rates without increasing air-conditioning tonnage Reduces the CAPITAL AND OPERATING COST of air-conditioning equipment Ideal for new construction or retrofit applications Meets space limitation requirements/ (could be installed in the false ceiling area) Helps maintain right humidity levels despite increased ventilation rates.

8 Benefits of ERVs over HRVs Contd. Benefits of ERV using rotary Energy Recovery Wheels Worldwide industry is opting for equipment with better sensible and latent efficiencies as Controls excess humidity without over-drying an interior space Provides more ventilation in cold weather Eliminates core condensation and significant frost formation in virtually all applications Is a year- round system that makes sense in both cold weather and hot, humid weather since It can influence humidity in order to prevent excessively dry indoor air in the winter and excessively humid indoor air in the summer Recovers humidity maintained in the space through a humidifier Has higher sensible and latent efficiencies leading to saving of cooling and heating costs Has negligible cross-over of air from supply to exhaust side due to addition of a purge section

9 Rotary Energy Exchangers

10 Performance comparison Enthalpy Wheels Vs Other Recovery Devices P R E S S U R E L O S S (IN. W G.) E F F E C T IV E N E S S (% ) C O IL T Y P E H E A T W H E E L P LA T E T Y P E 70 H E A T P IP E T W IN T O W E R P LA T E T Y P E H E A T P IP E H E A T W H E E L C O IL T Y P E F A C E V E L O C IT Y (F P M ) E F F E C T IV E N E S S P R E S S U R E L O S S

11 The core of the ERV - Enthalpy Recovery) Wheel (Energy The Enthalpy (Energy Recovery) Wheel also has the additional advantage of being the only unit to deliver latent transfer efficiently. With the fresh air load patterns being highly latent in nature and also, that there is a need to maintain a lower humidity in the conditioned space, the focus is on an energy recovery ventilator with enthalpy wheel. The enthalpy wheel is perfectly suited to help control humidity. In summer when the outside is hot and humid the enthalpy wheel is able to cool and dehumidify the incoming fresh air and in winter when it cold and dry outside it is able to heat and humidify.

12 Enthalpy Wheels... Contd. The enthalpy wheels with low first cost and maximum energy savings combine to give an extremely low payback. With the help of enthalpy wheels one can easily down size the installed air-conditioning equipment and can also result in negative pay back in many cases. Other advantages: Increases the SHF making it simple for cooling coil to handle the thermal load Would mean higher ADPs hence higher CHW temperatures. Low row deeps of cooling coils Avoid re-heat.

13 Benefits of using enthalpy wheels ARI and Eurovent certified wheels DRI can assist you in the design and development of units using our small size wheels Rotors have high density of desiccant and hence are favorable in size vs. performance ratios Strong Research and Development teams Produced in a world class manufacturing facility In-house coating facility thus maintenance of tight process parameters Ability to make any combination of Diameter, depths, flute geometry and to customers design/specifications if required Highly polished rotor surface minimizes leakages through seals Can provide the complete cassette cutting down on customers expensive labor hours

14 Enthalpy Rotors for ERVs (Energy Recovery Ventilators) PERFORMANCE CHART

15 ERV Applications The ERV can be applied a large number of applications including Health Care Nursing Homes, Hospitals, Clinics, Specialty Centers, Clinical Labs. etc. Entertainment Cinema Halls, Multiplexes, Discotheques etc. Hospitality Hotels, Restaurants, Pubs, Banquet Halls, Fast - Food centers etc. Commercial Offices, Banks, IT complexes, Conference Halls etc. Places of assembly Schools, Temples, Educational Instt., Supermarkets, Showrooms etc. Miscellaneous Beauty Parlours, Gymnasiums etc.

16 Energy Recovery Ventilators

17 Energy Recovery Ventilators......

18 Energy Recovery Ventilators......

19 Heat Recovery Wheels......

20 Typical ERV Installation Options

21 Case Study 1) Application Diamond Processing Unit 2) Location High Humidity City 3) Design Parameters a) Fresh Air Requirement b) Fresh Air Conditions Summer Monsoon c) Return Air Conditions Summer Monsoon d) Hours of working/day 1000 DBT( C) DBT( C) Assumptions Power Tariff/Kwh Power Consumption (KW/TR) Euro K.W 4. Cfm WDBT( C) RH(%) 55 % 55%

22 Case Study..... contd. Total Energy Recovered with Energy Recovery Ventilators Energy Saved in TR Energy Saved in Rs/Season (after taking into account the daily and seasonal variations) Total Savings/Year In Rs. Summer Monsoon 4.63 TR 4.39 TR Summer Monsoon Using VLI (Ventilation Load Index) for Mumbai Sensible Load Latent Load Total = = = 7.38 tons hrs per scfm per year tons hrs per scfm per year tons hrs per scfm per year Annual Load for 1000 cfm on 14 hrs per day basis and 300 days per year = 1000 x x 1.2 x 5 x 0.47 = 92,044

23 ENTHALPY ROTORS CAN BE customized to meet your requirements

24 Benefits for YOU with Rotors can be customized - to your design To retrofit in your existing equipment No extra engineering at YOU. Complete engineering support from India Assured long term supply Total support provided through Selection Software Selection software can be tailor made, for easy incorporation in your own package Quick response, fast delivery, substantial capacity to meet large orders

25 Let us make a Winning Team YOU +

26 YOU and DESICCANT ROTORS INTERNATIONAL Unlimited possibilities for Business Co-operation YOU

27 Specializing in technologies, products and services with desiccants at the core. PEOPLE MANUFACTURING PRODUCTS SERVICES Striving to exceed customer expectations

28 Fully integrated manufacturing facility for: Synthesizing / coating Winding Metal work (CNC) Surface finishing CNC fabricated & powder coated

29 REST OF THE WORLD DESICCANT ROTORS INTERNATIONAL Enthalpy & Sensible Rotors for Energy Recovery Desiccant Rotors for Dehumidification Evaporative Cooling Pads Specializing in components for ventilation systems using Honeycombing & Corrugation Technologies DESICCANT ROTORS INTERNATIONAL

30 Company and Product Profile Enthalpy & Sensible Rotors for Energy Recovery Made from aluminum substrate coated with molecular sieve or silica gel. The coated wheels give you substantially higher total recovery compared to the etched or corroded aluminum rotors. Our molecular sieve coated wheels allows you to minimize cross contamination while ensuring high moisture efficiency. Our silica gel coated wheels give you the highest latent recovery. Manufacturing wide range : 500mm ~ 5000mm (dia) and 200 & 270 mm depths Our rotors are tested in state of art ITS certified lab and are Eurovent certified In fact, our rotors were rated the highest in performance in the applicable class in the Eurovent certification program. Desiccant Rotors for Dehumidification Evaporative Cooling Pads Both 5mm & 7mm flutes can be customized for sizes and flute angles Manufactured on sophisticated production line and use special grade chemicals and hence have tremendous advantages over other competing products available in the market Exported worldwide on container basis We also manufacture special grade glass fiber based Fire retardant pads Top of the line in performance Available in a variety of combinations of substrates and desiccants. Cost effective solutions for requirements of both low humidity and desiccant cooling. Manufacturing wide range:250mm ~4250mm (dia) and 50mm,100mm, 200mm & 400mm(depth). The preferred supplier to many OEM s in North America, Japan, Europe & Korea

31 CORE COMPETENCIES: Desiccant Based Technologies Fluted Media Drying Rotors - Desiccant Energy Recovery - Sensible Cooling - Enthalpy DRI at the heart of it all Cellulose Pads Over 200 man-years of research in the field of rotors, to create the ideal honeycomb/fluted media, best suited to every application.

32 ROTORS Energy Recovery Desiccant, for Dehumidification Inorganic Fiber Aluminum Foil Coated/Impregnated Mylar Sheet/Organic Fiber x Sensible Enthalpy Coated Aluminum Foil Coated Aluminum Foil/ Inorganic Fiber Etched/Oxidized Aluminum Foil BEST for Minimal Crosscontamination x Not Recommended Inadequate Latent Recovery Not Recommended Inflammable Molecular Sieve on Aluminum Foil Silica Gel on Aluminum Foil BEST for High Recovery / Efficiency (η) ( ) Available from DRI Metal Silicate (Synthesized) on Inorganic Fiber BEST for Corrosive environment

33 Research & Development. State-of-the-art R&D Labs, one of the best in the environmental control industry and recognized by the Department of Science and Technology Have recently setup a testing facility for performance evaluation of Enthalpy Wheels, in association with Intertek Testing Services, Cortland (Intertek Associates with ARI for the ARI 1060 Programme) Over 200 man-years on research in the field of honeycomb rotors Continuously engaged in state-of-the-art product development.....

34 We re never too far from you!

35 Thank you!!