Page 39 - 2013 SDCA Project

only conditioned spaces required. These are relatively small residential split system, except they are much more efficient. browser’s comfort and to supplement the natural ventilation.
areas in relation to the overall industrial building, and if their Their efficiency comes primarily from using one exterior

envelope can be made very efficient per above, they should condensing unit to handle multiple indoor air handling units. Advanced Commissioning is definitely recommended.
not require a large amount of conditioning and therefore By adjusting and balancing the different refrigerant flows
energy use. needed by the multiple air handlers, it saves a great deal of pLuMbing – The restrooms will be completely redone
energy. and tied into the existing utilities that currently service the
There are a number of high efficiency heating and cooling building. As in energy conservation, the first task is to reduce
systems commercially available, but we have narrowed We recommend ERV (Energy Recovery) units be used the amount of potable water necessary for the occupants.
down the options to two recommendations: at the toilet exhausts and to introduce fresh air into the
conditioned spaces. This ‘recovers’ energy from the We recommend the following:
Geo thermal field with water source heat pumps exhausting conditioned air and uses it to temper Waterless urinals

VRF (Variable Refrigerant Flow) split systems unconditioned fresh air being introduced into the spaces. Dual Flush toilets
Economizer cycles (allowing fresh air to enter the building Solar powered water sensors
A Geo-Thermal ground source heating/cooling loop could be without conditioning) should be utilized when external Aerators on faucets
installed by drilling “tubes” approximately 400’ into the earth conditions are right. Operable windows/doors would allow Composting toilets
and then circulating water through them. in the summer, this for natural ventilation when conditions are right, but must
loop would transfer heat from the conditioned spaces into have some system of control to know when that is feasible. Use solar heated panels to heat domestic hot water (the
the earth, thus cooling them, and in winter it would remove building should only need a few panels, depending on the
heat from the earth and use it to heat the same conditioned incorporate a BAS (Building Automation System) with the café needs).
spaces. The geo-thermal grid would most likely go in the HVAC controls to not only control the systems for optimum
parking areas, but could go under any non-building, non- efficiency, but also to monitor the energy and water usage of Use rain water collection and storage for potable and non-
roadway areas (agriculture, e.g.). The grid would be about the building (Measurement & Verification). This will allow for potable water needs (toilets).

20’ to 25’ o.c. each way connected by underground piping in optimum efficiencies as well as tracking of usage.
rows and then connected to a header before going into the Use above grade storage tanks as close to points of
building as one set and then into a pump room (hopefully For the Warehouse/Retail space – this will be unconditioned, collection as possible (possibly more than one, as the points
centrally located). but will have natural ventilation with the operable clerestory of use are at opposite ends of the building) and also use
windows. if needed, fans and radiant heaters on occupancy for educational purposes. We will need different filtration
VRF systems work very much the same as a typical sensors can be strategically placed in the retail areas for systems for non-potable and potable water usage, so will