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We have discussed west-facing sun and air conditioning before; this time let’s get to the heat source itself.
Start with the physics. Solar radiation enters the room through the glass as short waves, and is absorbed by walls, desks, floors and people, turning into heat. When those surfaces radiate that heat back as long waves, the glass blocks the long waves on the way out — in it comes, out it cannot go, and heat keeps accumulating indoors. This is a simplified version of the greenhouse effect in an office.
The air conditioner does something different: it carries heat from the indoor air to the outside. But as long as the sun keeps radiating, the glass keeps “feeding” heat into the room, and the AC can only carry and chase at the same time. There is nothing wrong with its cooling capacity — the problem is that the heat source is not in the air, but on those west-facing panes.
Explainer video: where west-sun heat comes from
The video’s suggested approach: mount an ESEC One-Way View-Through Energy-Saving Window Curtain on the inner side of the glass so radiant heat is reflected before it enters the room — the curtain reflects 88% of solar radiant heat, and for near-infrared, which contributes most of the heat, reflectance is above 95%. Reducing heat at the source is the basis for any change in how window-side areas feel.
The full video is available on the company website and official short-video accounts.
Zhongke Energy Consumption Control (Beijing) Technology Co., Ltd.
Website: www.zknkkj.com (project installation records and product videos on the homepage)
Tel: +86 186 1068 5811 (Mr. Guo) | WeChat: ESEC88888
Official short-video accounts (all enterprise-verified): Douyin “做节能的郭大侠” | Channels “Glass insulation防晒-郭大侠” | Xiaohongshu “郭大侠节能”
