In radiant energies such as infrared (IR), high frequency (HF) and microwaves (MW), energy is transferred by thermal radiation. Note that there is a difference between drying and curing: drying requires the raising of the solvent molecules to or above the latent heat of evaporation, whereas curing techniques provide the energy for cross-linking ( polymerisation) or other reactions. The drying and curing of coatings are discussed in the STS BREF.
These technologies are applied in industrial production processes to heat products and thus, can be applied in drying processes. Radiant energies can be used alone or in combination with conduction or convection.
輻射熱能如紅外線、高週波、微波等，其能量由輻射熱傳導出去。要注意烘乾(drying)與硬化(curing)是不同的意義：乾燥技術是要將溶劑分子的溫度提高到超過其蒸發潛熱而蒸發；硬化技術是提供能量給溶劑分子產生連鎖反應(聚合作用)或其他的反應作用。塗層烘乾技術和硬化技術參見STS BREF (surface treatment using organic soluvents)
這些技術可應用在工業生產製程來加熱產品及烘乾製程上。輻射能技術可單獨使用或與熱傳導技術、熱對流技術合併使用。
None reported.
無
Radiant energies, in particular I R, can be used in retrofitting of installations or to boost the production line, coupled with convection or conduction.
In spite of their advantages (speed of action, quality of final products, energy savings), the use of radiant energies is not common in industrial applications, today known a s having a great energy savings potential.
IR can be used in:
●curing of paint, ink and varnish
●drying of paper, paperboard, pre-drying of textiles
●drying powder in the chemical and plastics industries.
HF can be used in the drying of:
●massive (monolithic) products: textiles (reels of wire), ceramics
●powder in the chemical industry.
MW can be used in the drying of:
●massive (monolithic) products (wood, agro-industry) or flat products
●chemical and pharmaceutical products (under vacuum).
輻射能，尤其是紅外線可在設施改裝或擴充生產線時，配合對流或傳導技術使用。姑不論其優點(反應速度、最終產品品質、節能)以及輻射能技術在工業應用還不是很普遍，以現今所知輻射能技術在節能上大有可為。
紅外線技術可用在：
●油漆、油墨、亮光劑
●造紙、紙板、紡織品的預乾燥。
●化學工業與塑膠工業粉狀物的烘乾
高週波烘乾技術可用在：
●大量單體產品、紡織品(線捲)、陶瓷產品。
●化學工業的粉體產品
微波烘乾技術可以用在：
●大量單體產品(木料、農產品)或平面產品
●化學與製藥產品(真空製程)
Investment is generally more expensive (20-30 %) than conventional techniques.
投資成本會比傳統技術高20~30%。
Energy Efficiency (2009) 3.11.4
