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ASHRAE Vietnam Chapter, đại diện chính thức của tổ chức kỹ thuật HVAC&R toàn cầu, sẽ đồng tổ chức Hội thảo Data Center Infra Techshow vào ngày 12/09/2025, trong khuôn khổ triển lãm CLEANFACT & RHVAC VIETNAM 2025. Chương trình đánh dấu bước hợp tác chuyên môn quan trọng, hướng đến nâng cao tiêu chuẩn […]

A wet-bulb economizer in temperate U.S. climates saves energy and supports occupant health through proper humidification by controlling the building supply dew-point temperature. More conventional variable air volume (VAV) designs typically select a dry-bulb economizer (DBE) to maintain building supply air temperatures for human comfort. Climate change and global warming have led to an increase […]

1. Farewell Message from the Regional Chair:Mr. Leong Cheng Wee concluded his 3-year term (2022–2025) as DRC, expressing heartfelt gratitude to all members and congratulating Ir. Ong Ching Loon as the incoming DRC for the next term. 2. 2025 Winter Conference in Orlando:Region XIII achieved notable success at the event, including: 3. CAR-ASHRAE at China […]

Energy efficient building design and decarbonization have become a high priority in the quest to reduce the effects of pollution, conserve natural resources and slow climate change. Many engineers and stakeholders want to reduce energy consumption and related carbon emissions from buildings but may not know how to do so. This article analyzes existing net […]

“Technically tight” means a refrigeration or AC system can leak a tiny, controlled amount of refrigerant—low enough that it won’t hurt efficiency, safety, or the environment. Regulations for F‑gases aim at ≤ 5 g/year, but the real acceptable rate depends on charge size, refrigerant hazard, and maintenance interval. Good design, quality construction, and regular checks create durably […]

The article analyzes CO₂ buildup inside car cabins when using air recirculation mode, which affects driver alertness and health. It recommends using CO₂ sensors and applying ASHRAE Standard 62-2001 to automatically control fresh air intake. Tests and simulations show that maintaining a minimum of 40% fresh air (Partial Recirculation Factor) keeps CO₂ levels below 1,100 […]