Following are answers to frequently asked questions. If you have questions, just complete the on-line question form or call us: (819) 762-2818.

Can an energy recovery unit prove more cost efficient than a make-up air unit?

• The cost efficiency ratio of an energy recovery unit depends on five criteria:

  1. The number of service hours daily Yes. Large companies do so. In the food industry, food freshness, energy management and response speed (ice cream) have made food stores increasingly competitive.

  2. The difference between exhausted air temperature and outdoor air temperature

  3. The number of degrees-day in the region

  4. The installation mechanical simplicity

  5. Energy costs

  Where those five criteria are fully met, the return on investment on energy recovery systems is often feasible within two years.

Can I install a heat pump on my industrial process?

• Yes. It is somewhat simple to conceptualize heat pump applications. Costs can run high but performance energy ratios can prove quite interesting.

Can I replace an air change method by an air filtration method?

• Yes. There are several types of energy saving and environment-friendly filtration methods you can choose from.

  1. Solid particle filtration with low true volume

  2. Solid particle filtration with high true volume

  3. Chemical gas filtration

  4. Coal odor filtration

  Certain filtration/recirculation operations are not approved by the CSST, therefore it is the design engineer's responsibility to give sound advice in that regard.

Can I use energy recovery systems at temperatures below freezing point?

• Yes. You have 5 defrost options to choose from:

  1. Exhaust defrost

  2. Re-circulation defrost

  3. Constant defrost

  4. Indoor re-circulation defrost

  5. Outdoor air pre-heating

  The design engineer selects the type of defrost system on the basis of maximum energy recovery ratios and the kind of pollutants in exhaust air.

Is there any advantage to control my equipment with an automated system?

• Yes. Large companies do so. In the food industry, food freshness, energy management and response speed (ice cream) have made food stores increasingly competitive. In the industrial sector, process reliability and operation costs control are two key factors to success. In commercial buildings, comfort, quality service, costs management and data monitoring by the owner make automated control systems very important management tools.

My plant is noisy. Is there any noise reduction system available on the market?

• Yes. Some systems do absorb reflected sound waves. Noise propagates in the form of waves and multiplies when encountering reflecting surfaces. On the contrary, noise reduces when encountering absorbing surface. It is the design engineer's responsibility to install the noise reduction system at the right location.

To calculate the volume of air changes per hour is it necessary to take the full height of my plant into consideration?

• No. Simply calculate the first twelve feet from the operator's work platform (refer to the occupational health and safety legislation governing your operations.