Case Study - Lauriston Girls High School - VRV
Lauriston is a non-denominational school which provides superior educational opportunities, primarily for girls, from Kindergarten to Year 12, and which emphasises learning through experience, the development of independent learners and academic excellence.

Lauriston Girls requested engineering advice and recommendations from ACHALL for the Air Conditioning of its first floor classrooms consisting of corridors, visual arts, computer and general classrooms and exhaust systems to its printing and dark rooms.

The A/C system was designed in accordance with the following basic client requirements:

	The Air conditioning system would need to be asthetically pleasing fitting into the general decor and interior design of the building.
	The A/C system would need to provide individual comfort conditions over a broad temperature range to each classroom.
	A design that encompasses high reliability, efficient operation and provides economic short and long term running costs.
	The new first floor system would need to interface / connect to the existing central controller (currently serving existing ground floor system).

Bases on these basic requirements, ACHALL performed an engineering analysis of the premises, including a site audit to determine potential heat generation and losses to the building.

Since an existing Daikin VRV system had been previously installed to the ground floor offices and classrooms, it was decided that a second Daikin VRV system installed to serve the first floor would provide the best combination of economic operation, reliability, connectivity to existing central Daikin controllers and flexibility to meet building layout and interior finishes.

The engineering design of the second VRV system was based on a 2pipe zoned VRV system. This enabled simultaneous heating and cooling of spaces. This design concept allowed the cooling operation of one zoned system to computer rooms and similiar spaces (which would typically require cooling only - due to internal heat generation and as proven via engineering analysis), while allowing heating operation to south facing classrooms and areas from a second zoned system (where largest heating losses typically occur - due to large south full height glazing and as proven via engineering analysis).

A two pipe zoned VRV system was able to provide the simultaneous heating and cooling requirements needed for this project while remaining within client budget requirements.