VRF, DOAS and High-Performance Buildings | HPAC Engineering
Download the June 2018 white paper, DOAS and VRF: Applying Systems for High-Performance Buildings. Energy efficiency is also more relevant than ever. Market-based incentives, a sustainability mindset and government regulation are leading building owners to look for energy-efficient HVAC solutions.
Utilizing VRF and DOAS for High-Performance Building Applications
Utilizing VRF and DOAS for High-Performance Building Applications By Joe Cefaly September 17, 2018 Today’s building owners and occupants are more tech-savvy than ever before, demanding greater connectivity, control, and efficiency from technology — including HVAC systems.
VRF & Ductless Systems - Trane
Trane / Mitsubishi Electric VRF heat pumps and heat-recovery systems are strategic electrification solutions as part of the greater drive towards the decarbonization of HVAC systems. VRF is a popular, flexible heat pump that electrifies heat while delivering more targeted occupant comfort. It’s a combination that makes VRF highly energy
Variable Refrigerant Flow (VRF) Systems - Trane Index
One of the largest benefits of a VRF system is that the indoor units utilize coils which can heat or cool the zones. Heat pump system configurations can either completely cool or completely heat all the zones it serves. In a Heat Recovery system each individual zone can either heat or cool as needed.
Using performance-based design for DOAS | Consulting
As the name implies, a DOAS conditions the OA brought into a building for the use of ventilation; the air is delivered to occupied spaces either directly or in coordination with other local or zoned equipment that serve the building spaces’ HVAC requirements.
- How do dedicated outdoor air systems (DOAS) complement VRF systems?
- Dedicated Outdoor Air Systems (DOAS) complement Variable Refrigerant Flow (VRF) systems to meet building comfort demands and provide complete, high-performance HVAC solutions. At its most basic, mechanical ventilation, such as DOAS, introduces fresh, outside air into a space.
- What is a DOAS ventilation system?
- DOAS (Dedicated Outdoor Air Systems) are dedicated ventilation systems designed to condition outdoor air. Consulting engineers often use them in conjunction with VRF (Variable Refrigerant Flow) systems for energy efficiency.
- Can a dedicated outdoor-air system be used with a Variable-Refrigerant-Flow (VRF) System?
- Pairing a dedicated outdoor-air system (DOAS) with a variable-refrigerant-flow (VRF) system can provide: • Simplified system design. • Increased efficiencies. Variable-air-volume (VAV) systems with air terminal units have been used extensively in commercial and institutional buildings in the United States for decades.
- What is the difference between VRF VVV and DOAs?
- Unlike VRF–VAV system, DOAS in this design is used to handle the full latent load and even some portion of the sensible load of the indoor spaces by cooling and dew point dehumidification of the outdoor air. The rest of the load (sensible) is efficiently managed by the VRF indoor units [148, 149].
- Are there any advances in the field of VRF systems?
- Several researchers have conducted comprehensive reviews of advances in the field of VRF systems. Aynur presented an overview of VRF system configurations, operations, applications, marketing, and costs as well as experimental and numerical studies related to VRF systems.
- Can VRF systems be integrated with other HVAC systems?
- With the availability of a wide range of products and kits from various manufacturers, the process of integrating VRF systems with other heating, ventilation, and air conditioning (HVAC) systems has become much simpler . The majority of the reviewed studies primarily concentrated on enhancing the control methods of the combined systems.
