ASHRAE Journal - October 2021 - 21

Petra Climate
Considerations and
Development for
LGWP Requirements
Petra Engineering completed a new project initiative in
cooperation with the United Nations Industrial Development
Organization (UNIDO) that aims to replace refrigerants that
contribute to Ozone Depletion and have a high Global
Warming Potential (GWP) factor. The initiative implements
use of Low GWP propane (R290) as a refrigerant in the
manufacturing of large commercial unitary roof-top HVAC
units of up113 Tons (400 Kw).
The project is " considered as a unique cooperation
testing initiative with the UNIDO to manufacture large
HVAC equipment with a Low GWP factor " . It was
conducted in response to a decision by the UNIDO
executive committee to use natural refrigerants and
adopt the Kigali Amendment to the Montreal Protocol.
According to multiple research studies and installed
systems, R-290 is considered the most environmentfriendly
refrigerant available for Air Conditioning units
due to its very low GWP factor as well as no impact
on ozone layer depletion along with better energy
efficiency, especially at high ambient temperatures.
The project was conducted at Petra Engineering Industries
Co. facilities and consisted of qualifying production lines
to be capable of manufacturing equipment to work with
low GWP refrigerants. The program incorporates design,
development, manufacturing, and testing of three
prototypes using R290 (A3) and R32 (A2L) refrigerants.
Other environmentally friendly gases that Petra is
considering and testing are R-452B and R-1234ze
on various types of HVAC equipment for residential,
commercial, & industrial applications.
Petra's product offering using low GWP refrigerants
includes (but not limited to) Roof Top Units, Chillers,
Computer Room Air Conditioning (CRAC) units, Central
Split Systems and Residential Split Systems.
Package Unit with R-290 Refrigerant
Air Cooled Water Chiller
with R-452B Refrigerant
Air Cooled Water Chiller
Package Unit with R-32 RefrigerantPackage Unit with R-32 Refrigerant
http://www.petra-eng.com

ASHRAE Journal - October 2021

Table of Contents for the Digital Edition of ASHRAE Journal - October 2021

Contents
ASHRAE Journal - October 2021 - Intro
ASHRAE Journal - October 2021 - Cover1
ASHRAE Journal - October 2021 - Cover2
ASHRAE Journal - October 2021 - 1
ASHRAE Journal - October 2021 - Contents
ASHRAE Journal - October 2021 - 3
ASHRAE Journal - October 2021 - 4
ASHRAE Journal - October 2021 - 5
ASHRAE Journal - October 2021 - 6
ASHRAE Journal - October 2021 - 7
ASHRAE Journal - October 2021 - 8
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ASHRAE Journal - October 2021 - 11
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ASHRAE Journal - October 2021 - 21
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ASHRAE Journal - October 2021 - 71
ASHRAE Journal - October 2021 - 72
ASHRAE Journal - October 2021 - HR1
ASHRAE Journal - October 2021 - HR2
ASHRAE Journal - October 2021 - HR3
ASHRAE Journal - October 2021 - HR4
ASHRAE Journal - October 2021 - HR5
ASHRAE Journal - October 2021 - HR6
ASHRAE Journal - October 2021 - HR7
ASHRAE Journal - October 2021 - HR8
ASHRAE Journal - October 2021 - HR9
ASHRAE Journal - October 2021 - HR10
ASHRAE Journal - October 2021 - HR11
ASHRAE Journal - October 2021 - HR12
ASHRAE Journal - October 2021 - HR13
ASHRAE Journal - October 2021 - HR14
ASHRAE Journal - October 2021 - HR15
ASHRAE Journal - October 2021 - HR16
ASHRAE Journal - October 2021 - HR17
ASHRAE Journal - October 2021 - HR18
ASHRAE Journal - October 2021 - HR19
ASHRAE Journal - October 2021 - HR20
ASHRAE Journal - October 2021 - HR21
ASHRAE Journal - October 2021 - HR22
ASHRAE Journal - October 2021 - HR23
ASHRAE Journal - October 2021 - HR24
ASHRAE Journal - October 2021 - 73
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ASHRAE Journal - October 2021 - 95
ASHRAE Journal - October 2021 - 96
ASHRAE Journal - October 2021 - Cover3
ASHRAE Journal - October 2021 - Cover4
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