Energy Recovery in Health Care Facilities
The Zero Cross Contamination Solution
The year-round operation of health care facilities and required ventilation rates presents a huge opportunity for energy savings when used in conjunction with energy recovery systems. However, careful consideration must be taken when incorporating these products into the design of health care ventilation systems, due to cross contamination concerns.
ASHRAE Std 170-2013 Ventilation of Health Care Facilities addresses these concerns by requiring a minimum separation of 25 ft (8 m) between outdoor air intakes and exhaust discharges. It further prohibits the use of energy recovery devices in exhaust systems of airborne infectious isolation (AII) and protective environment (PE) rooms unless adequate separation exists between airstreams. In these scenarios, HPT’s split passive energy recovery systems (HRM-V) are best utilized. With an allowable separation of up to 120 ft between exhaust and supply, up to 50% of exhaust energy can be recovered without any risk of contamination.
This same standard does provide an exception to the 25 ft. requirement when Class 1 relief air is utilized. Class 1 air is defined as having little to no contamination or odors than what is found in class 2, 3, or 4. Even under this exception, the energy recovery device must minimize leak potential so that no more than 5% of supply air consists of the exhaust air. Under this scenario, HPT’s side-by-side energy recovery product HRM-H, is utilized. An optional foam filled gap of up to 40” can be incorporated between supply and exhaust for added assurance. This product can also be optimized to recover more energy for the season with the most BTUs and runtime hours and can be configured for airstreams that are in an over-under configuration. To learn more about our energy recover product line, please visit our website by clicking the link below.
New and Improved Website!
HPT has recently performed a drastic makeover of its company website to include better content navigation, illustrative case studies, content rich brochures, and more.
The new website incorporates all the latest web standards and updates for exceptional viewing experience on both desktop computers and mobile platforms. Users should be able to enjoy having all the latest news and product offerings with just a few clicks away. Please checkout the new site by clicking the link below.
How to Optimize for Dehumidification Using Tilted Wrap-Around Heat Pipes
HPT recently hosted a training webinar on our SelecPlus™ Design Software, which focused on our Wrap-Around (DHP) products and how they can be utilized for dehumidifcation.
In the webinar, the following topics where covered:
- What is the optimized DHP
- Selection examples of Wrap-Arounds
- Comparison to standard Wrap-Arounds
- Saving Analysis using temperature bins method
- Other helpful tips and shortcuts.
If you would like to watch the past webinar, please click the link below.
Wrap-Around Heat Pipes (DHP)
Wrap-Around heat pipes can save energy and enhance dehumidification either by replacing or minimizing the expensive reheat, or by reducing the sensible load cooling coil. To learn more about the benefits and feature of the product, please follow the link below.
Side-by-side Energy Recovery (HRM)
HPT's Energy Recovery Heat Pipes are an economical and reliable energy recovery device capable of operating during both heating and cooling seasons. To learn more about the benefits and feature of the product, please follow the link below.
SelectPlus™ Design Software
HPT's web-based selection software allows user 24/7 access to our product's performance. Please click below to request an account.
AHRI Certified and ETL Listed
HPT is both AHRI certified for its air-to-air heat exchangers and ETL Listed for all of its existing products.
This newsletter is a service of HPT, Inc. It is meant to familiarize users with Heat Pipe Technology, and how to select heat pipe systems using SelectPlus™ design software.