Find the most up-to-date version of CSA C SERIES at Engineering Table of Contents. Preface ANSI/CSA C, Design and installation of ground source heat pump systems – Generic applications for all systems 1 Scope. This is the second edition of the CSA C Series, Design and installation of earth energy systems. It supersedes the previous edition published in
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Thermal energy storage systems can use an open loop or closed loop configuration to transfer the energy. The refrigerant from the heat pump is circulated through a continuous loop of tubing that extends from the heat pump into the ground. Some of these risks could include fluid and gas migration of fluids, gas and other contaminants along preferential pathways; erosion and contamination by discharge water; and possible adverse effects of temperature imbalances.
The two standards do not provide information on the type of grouting mixtures to use nor discuss when various types of bentonite or cement are to be placed into the hole.
Table 1 is a three part table designed to provide Ontario’s Environmental legislative framework for earth energy system outside heat exchange loops. Need more than one copy?
Figure 1 is a drawing showing an example of an open loop ground source geothermal system. Heat in the outside loop is transferred to a refrigerant in the heat c48 unit. Both horizontal waterlines are shown to be buried beneath the ground surface to prevent freezing in winter. Arrows show groundwater is pumped out of the supply well through the waterline into the heat pump in the excavation located in front of the home. Heat is then transferred to the outside loop and is released into the ground or surface water.
Draft, JunePublished by the Ministry of x448 Environment. A Permit To Take Water is generally not required for the operation of a closed loop, DX or BTES earth energy system f448 to heat or cool an industrial commercial building because, although tubing is installed into the hole or surface water body, no water is being taken.
The diagram uses a blue colour on the right side of the vertical U loops and the other horizontal tube in the ground to the heat pump in the residence. An example of vertical closed loop system Illustration used with permission. An Energy Centre with short term thermal storage in tanks.
Earth Energy Systems in Ontario |
To reduce the risk of the hole acting as a pathway, a person should consider:. Figure 4 shows tubing placed in a vertical hole that is part of a closed loop earth energy system.
If a well, hole or trench intersects groundwater and cwa than 50, litres of water in a day is being removed out of the hole during the construction process, then the person constructing the well, hole or trench must have a valid Permit To Take C448. The use, operation, construction, alteration, extension and replacement of a ground source heat pump that uses methanol as a heat-transfer fluid.
A conservation authority may grant or deny permission, or grant permission with conditions for development as defined under the Act where it deems that the control of flooding, erosion, dynamic beaches, pollution or the conservation of land is not affected. The annular space between the steel casing and borehole is sealed to prevent flow from ground surface into the well. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.
The tubes attach to the heat pump in the building. For the purposes of this technical bulletin, a ground source heat pump means the same thing as an earth energy system.
You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. Heat is then dissipated from the caa pump’s refrigerant into the building’s heating or cooling unit. Online meeting and collaboration technology will be used to minimize travel times and impacts.
After heat transfer fluid tubing is installed in a hole for a closed loop, direct exchange or BTES system, a material is usually placed in the hole to fill the remaining void space. Notes caa tables and figures are considered part of the table or figure and may be written as requirements.
Depending on the type of antifreeze and site-specific environmental conditions, a heat transfer cda from an earth energy system may cause an adverse effect to the vsa environment, impairment to groundwater or surface water, damage to property and a safety risk e.
Due to its shallow depth, the environmental compliance approval will not apply to horizontal closed loop earth energy systems in most cases. Proper decommissioning of an earth energy system mitigates potential hazards and helps to protect the environment from potential contaminant migration along preferential pathways and from discharges of heat transfer fluid.
Parks C48 should also be contacted if the project csz located within its jurisdiction including the Trent Severn Waterway and the Rideau Canal. In a vertical DX system, the tubing is installed into vertical, including directional or angled, holes and backfilled with a bentonite, cement c48 sand product. The three trades certificates relevant to the construction and installation of the external loop of earth energy systems are plumber, refrigeration and air conditioning mechanic and steamfitter.
You may however, require an environmental compliance approval during the construction of a closed loop or direct exchange earth energy system if, during this period, water is being discharged directly or indirectly into a ditch, drain or storm sewer or a well, lake, river, pond, spring, stream, reservoir or other water or watercourse.
For further information about Trades regulation and requirements can be obtained from the Ministry of Training, Colleges and Universities, Programs Branch, at or Please first verify your email before subscribing to alerts. Need more than one copy? Earth energy systems that are cas in the local assessment report as posing a significant threat to water quality or quantity may be subject to policies to manage the threat or that prohibit the earth energy system from being located in a particular area.
If used 4c48 closed loop systems, lower density polyethylene tubing also has an increased risk of degradation and cracking. We have no amendments or corrections for this standard.
Underground thermal energy storage systems formerly, contained within previous editions of this Standard under CSA C Some of these gases, such as methane and hydrogen sulphide, are explosive. A refrigerant for a direct exchange earth energy system is also considered a heat transfer fluid under the Ground Source Heat Pump Regulation. The publications are also available by calling the Ministry of the Environment’s Public Information Centre at or The bottom of the sleeve contains perforations to allow the submersible pump to extract groundwater from the formation through the waterline, towards the heat pump.
Other practical information on cement is found in section 3 of the Provincial Operating Standards, Version 2. The Building Code Regulation sets minimum requirements governing the construction and renovation of most earth energy systems. For example, if a person is constructing holes in artesian aquifers that could cause uncontrolled flows at surface, the person:. The Wells Regulation sets well construction, maintenance, tagging, notification, well record and abandonment requirements and imposes well licensing requirements for various well construction activities.