Editing Heat recovery ventilation (section)

=== Types of energy recovery devices ===
{| class="wikitable"
|-
! Energy recovery device
! Type of transfer
|-
| [[Thermal wheel|Rotary enthalpy wheel]]
| Total and sensible
|-
| [[Recuperator|Fixed plate]]
| Total** and sensible
|-
| [[Heat pipe]]
| Sensible
|-
| [[Run around coil]]
| Sensible
|-
| [[Thermosiphon]]
| Sensible
|-
| Twin towers<ref>{{cite book |url=https://archive.org/details/2000ashraehandbo00amer/page/44 |title=ASHRAE Systems and Equipment Handbook |date=July 2000 |publisher=American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) |isbn=978-1883413804 |page=[https://archive.org/details/2000ashraehandbo00amer/page/44 44.17] |chapter=Chapter 44: Air-Air Energy Recovery |chapter-url=http://reverseflow.com/wp-content/uploads/2013/05/ASHRAE-Chapter-44.pdf}}</ref>
| Sensible
|}
<nowiki>**</nowiki>Total energy exchange only available on hygroscopic units and condensate return units