Radiant heating, cooling systems paired with geothermal boost efficiency (video)

A recent study by the New Buildings Institute found nearly half of the zero-energy buildings in the United States incorporate radiant systems to meet their energy goals. The study also notes that these systems are often integrated with ground-sourced heat pumps to achieve zero energy as part of a cost-effective package.

Hydronic radiant heating and cooling systems combined with downsized air-handling systems can reduce HVAC energy consumption and initial investment costs while increasing thermal comfort in commercial buildings. When further integrated with a renewable energy source, such as the REHAU RAUGEO ground loop heat exchange system, REHAU radiant heating and cooling systems make a significant contribution toward high-performance and net-zero commercial building.

The company featured the heating solution at the recent AHR 2016 in Orlando.

Radiant heating and cooling systems work by circulating fluid through a network of RAUPEX O2 Barrier crosslinked polyethylene (PEXa) pipes placed in the floors, walls or ceilings. When the circulating fluid is warm, heat is gently radiated from the panel, warming the surfaces, objects and occupants in the room and eliminating drafts and hot spots. When cooled fluid is being circulated through the pipes embedded in the building structure, radiant cooling evenly absorbs heat energy, cooling the space to a comfortable temperature.

Used in combination with a downsized air-handling system, a hydronic radiant heating and cooling system can condition a space very efficiently. By reducing the load on the air-handling system with more efficient hydronic energy transfer, radiant systems can not only reduce energy costs by 30 percent or more, but can also lower initial investment costs by allowing the air-handling system to be downsized.

In addition to saving energy, radiant heating and cooling systems that use moderate water temperatures pave the way for integrating a water-to-water geothermal heat pump system for maximum efficiency. Geothermal systems exchange energy from the earth to heat and cool at a fraction of the operating costs of traditional HVAC. According to the International Ground Source Heat Pump Association, ground source heat pumps can reduce energy consumption by up to 50 percent when compared to conventional systems.

The REHAU RAUGEO ground loop heat exchange system provides numerous advantages over traditional geothermal systems. The RAUGEO crosslinked polyethylene (PEXa) piping system offers superior flexibility and abrasion resistance, while pre-formed double U-bends require up to 30 percent less borehole footage than a single HDPE U-bend. RAUGEO ground loops usually begin and end at a balancing manifold that, unlike the typical reverse-return header, allows each ground loop to be individually controlled for system optimization.  


Topics: Architectural Firms, Building Owners and Managers, Construction Firms, Consulting - Green & Sustainable Strategies and Solutions, Energy Audit / Energy Management, Energy Recovery & Heat Recovery Ventilation, Energy Saving Products, Engineering Firms, Geothermal Heating and Cooling, Great Commercial Buildings, HVAC - Heating, Cooling, and Ventilation, Indoor Air Quality (IAQ), Radiant Heat - Electrical & Hydronic, Technology, Urban Planning and Design


Search for your lost shaker of salt in Margaritaville's green retirement communities

Search for your lost shaker of salt in Margaritaville's green retirement communities

Each home in the Latitude project was designed to provide a low-maintenance, energy-efficient lifestyle.

New product helps with rainwater management

New product helps with rainwater management

Pavement filtration system works with concrete, asphalt and pavers to create permeable surface.

Sponsored by: Bio-Microbics

Haier advances take IAQ to higher level

Haier advances take IAQ to higher level

Self-cleaning technology, automation remove contaminants, extend life of HVAC units

New solution uses fresh air to boost IAQ

New solution uses fresh air to boost IAQ

FreshAire PTAC focuses on multifamily, lodging, commercial spaces

Smart thermostat makes comfort personal

Smart thermostat makes comfort personal

Lux's Kono technology automatically adjusts for optimal comfort, savings

Smart building platforms becoming smarter

Smart building platforms becoming smarter

Ventacity Systems technology helps commercial users optimize efficiency, create healthy environment

Sensei teaches the art of easy serviceability

Sensei teaches the art of easy serviceability

All unit components designed to be removed in less than 10 minutes

GLAS provides look at future of efficient thermostats

GLAS provides look at future of efficient thermostats

Aesthetics only part of appeal of Johnson Controls' newest product

Solution spotlights efficiency, serviceability

Solution spotlights efficiency, serviceability

Rooftop unit helps lead Rheem's commercial line expansion

Climate Control systems offer efficiencies for residential, commercial applications

Climate Control systems offer efficiencies for residential, commercial applications

Solution design focuses on positive up-front, back-end financial impact

Demand, research drive ERV, HRV development

Demand, research drive ERV, HRV development

Improving efficiency, occupant comfort key as building envelopes tighten


Related Content


Latest Content

Get the latest news & insights


NEWS

RESOURCES

TRENDING

FEATURES

New Georgia center as good to environment as refugees it will serve

RESEARCH CENTERS