Building Management Hawaii - (Page 30)

New Trends Emerge in HVAC Systems Variable refrigerant flow, smart thermostats lauded BY DREW SANTOS Multi Air Conditioning System for Buildings HVAC T echnology and efficiency are key factors in the quickly changing HVAC market. Leading trends in air conditioning for 2015 include variable refrigerant flow (VRF) and multi-zone systems along with smart thermostats and advanced duct systems that eliminate fiberglass wrap or liner from the building envelope. While we will see a change in the national minimum Seasonal Energy Efficiency Ratio rating go from 13 to 14 SEER, there are many systems that deliver 20 to 30 SEER. VRF and split system technology saves energy and money. Fujitsu's VRF systems are designed for commercial buildings and allow the building owner to "zone" the air conditioning load so that only rooms that are occupied or require cooling are being cooled. By utilizing smaller indoor air handlers each room is individually computer controlled to minimize operating time and maximize savings. This is in direct contrast to a large chiller or package unit air conditioning system that comes on all at once and cools all spaces no matter if the rooms are occupied or not. VRF technology brings precise temperature control to each zone and can be controlled from a central HAWAII'S #1 SOURCE FOR AIR CONDITIONING VENTILATION INSULATION LOW PRICES - FREE OAHU DELIVERY - HUGE INVENTORY Visit our showroom at: Email: 2225 Hoonee Place * Honolulu, Hawaii 96819 (808) 841-7400 * (FAX) 841-7222 30 February-March 2015 BMH Fujitsu's AIRSTAGE V-II-SERIES DC Twin Rotary Inverter VRF System. remote control or by a remote computer system. For noncommercial buildings, Fujitsu has multi-zone systems called HFI (Hybrid Flex Inverter). The HFI system is less expensive than a VRF system and allows you to cool up to eight zones from a single compact and quiet outdoor unit. The HFI system is ideal for single-family homes, condominiums and light commercial applications where three-phase power is not available. Innovations in equipment design and thermostats are only the beginning. We are also seeing a revolution in the way building owners duct cool air throughout a building envelope. Both the VRF and HFI systems utilize Inverter compressor technology. Inverters are a big reason why we are seeing a rapid increase in SEER ratings. Inverter compressors do not come on at full speed and run 100 percent like traditional compressors. An inverter compressor ramps up and down slowly, depending on the cooling load. This allows for a "soft" start at minimum amperage draw. As the cooling load increases so does the speed of the compressor. The beauty of an inverter is that if the compressor only needs to run at

Table of Contents for the Digital Edition of Building Management Hawaii

Editor’s Note: Energy Management
Insider’s Guide to Picking a Security Company for Your Property
Industry News
Dealing with Graffiti and Glass Damage
Hawaii’s High-Tech Roofing Products
Building and Management Expo Set
Installing New & Improved Windows
Window Film Cuts Glare, Energy Bills
Reassessing Hurricane Preparedness
An ESA Can Deliver Peace of Mind
Checking a Building’s Energy Score
Managing PV Energy Consumption
The Ultimate Energy-Efficient Building
What to Know About Chiller Plants
New Trends Emerge in HVAC Systems
Walk-throughs Vital to Engineers
Trapped in the Web of Act 326
Faces: The IREM Banquet

Building Management Hawaii