{"id":19809,"date":"2022-08-18T09:12:55","date_gmt":"2022-08-18T09:12:55","guid":{"rendered":"http:\/\/dgbellvietnam.com\/how-to-select-a-suitable-temperature-humidity-test-chamber\/"},"modified":"2024-10-24T20:33:09","modified_gmt":"2024-10-24T13:33:09","slug":"how-to-select-a-suitable-temperature-humidity-test-chamber","status":"publish","type":"post","link":"https:\/\/dgbellvietnam.com\/en\/how-to-select-a-suitable-temperature-humidity-test-chamber\/","title":{"rendered":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn \u0111\u01b0\u1ee3c bu\u1ed3ng th\u1eed nhi\u1ec7t \u0111\u1ed9 \u0111\u1ed9 \u1ea9m ph\u00f9 h\u1ee3p?"},"content":{"rendered":"
\n

1. L\u1ef1a ch\u1ecdn \u00e2m l\u01b0\u1ee3ng<\/span><\/span><\/span><\/strong><\/span><\/h1>\n

Khi s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m (linh ki\u1ec7n, th\u00e0nh ph\u1ea7n, b\u1ed9 ph\u1eadn ho\u1eb7c m\u00e1y ho\u00e0n ch\u1ec9nh) \u0111\u01b0\u1ee3c \u0111\u1eb7t trong bu\u1ed3ng m\u00f4i tr\u01b0\u1eddng kh\u00ed h\u1eadu \u0111\u1ec3 th\u1eed nghi\u1ec7m, nh\u1eb1m \u0111\u1ea3m b\u1ea3o r\u1eb1ng s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m<\/span><\/span><\/p>\n

Kh\u00f4ng kh\u00ed xung quanh c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1eed nghi\u1ec7m m\u00f4i tr\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt th\u1eed nghi\u1ec7m. C\u00e1c quy \u0111\u1ecbnh sau \u0111\u00e2y ph\u1ea3i \u0111\u01b0\u1ee3c tu\u00e2n th\u1ee7 gi\u1eefa k\u00edch th\u01b0\u1edbc l\u00e0m vi\u1ec7c c\u1ee7a bu\u1ed3ng kh\u00ed h\u1eadu v\u00e0 k\u00edch th\u01b0\u1edbc b\u00ean ngo\u00e0i c\u1ee7a s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m:<\/span><\/span><\/p>\n

a) Th\u1ec3 t\u00edch c\u1ee7a s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m (R\u1ed9ng x S\u00e2u x Cao) kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 (20 ~ 35)% kh\u00f4ng gian l\u00e0m vi\u1ec7c hi\u1ec7u qu\u1ea3 c\u1ee7a bu\u1ed3ng th\u1eed nghi\u1ec7m (khuy\u1ebfn ngh\u1ecb)<\/span><\/span><\/p>\n

20%). Khuy\u1ebfn c\u00e1o kh\u00f4ng n\u00ean ch\u1ecdn qu\u00e1 10% s\u1ea3n ph\u1ea9m t\u1ea1o ra nhi\u1ec7t trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m.<\/span><\/span><\/p>\n

b) T\u1ef7 l\u1ec7 di\u1ec7n t\u00edch m\u1eb7t c\u1eaft \u0111\u00f3n gi\u00f3 c\u1ee7a s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m so v\u1edbi t\u1ed5ng di\u1ec7n t\u00edch c\u1ee7a bu\u1ed3ng th\u1eed nghi\u1ec7m tr\u00ean m\u1eb7t c\u1eaft kh\u00f4ng \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n (35 ~ 50)% (\u0111\u1ea9y)<\/span><\/span><\/p>\n

Khuy\u1ebfn ngh\u1ecb 35%).<\/span><\/span><\/p>\n

c) Kho\u1ea3ng c\u00e1ch gi\u1eefa b\u1ec1 m\u1eb7t ngo\u00e0i c\u1ee7a s\u1ea3n ph\u1ea9m th\u1eed nghi\u1ec7m v\u00e0 th\u00e0nh bu\u1ed3ng th\u1eed nghi\u1ec7m ph\u1ea3i \u00edt nh\u1ea5t l\u00e0 100 ~ 150 mm (khuy\u1ebfn ngh\u1ecb l\u00e0 150 mm).<\/span><\/span><\/p>\n

Ba \u0111i\u1ec3m tr\u00ean ph\u1ee5 thu\u1ed9c l\u1eabn nhau v\u00e0 th\u1ed1ng nh\u1ea5t. L\u1ea5y m\u1ed9t bu\u1ed3ng kh\u1ed1i l\u1eadp ph\u01b0\u01a1ng m\u00e9t kh\u1ed1i l\u00e0m v\u00ed d\u1ee5, t\u1ef7 l\u1ec7 di\u1ec7n t\u00edch l\u00e0 1: (0,35 ~ 0,5) t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi t\u1ef7 l\u1ec7 th\u1ec3 t\u00edch l\u00e0 1: (0,207 ~ 0,354). 100 ~ 150 mm t\u1eeb th\u00e0nh b\u1ec3 t\u01b0\u01a1ng \u1ee9ng v\u1edbi t\u1ef7 l\u1ec7 th\u1ec3 t\u00edch l\u00e0 1: (0,343 ~ 0,512).<\/span><\/span><\/p>\n

T\u00f3m l\u1ea1i ba \u0111i\u1ec3m tr\u00ean, th\u1ec3 t\u00edch bu\u1ed3ng l\u00e0m vi\u1ec7c c\u1ee7a bu\u1ed3ng th\u1eed nghi\u1ec7m m\u00f4i tr\u01b0\u1eddng kh\u00ed h\u1eadu ph\u1ea3i \u00edt nh\u1ea5t g\u1ea5p 3-5 l\u1ea7n th\u1ec3 t\u00edch b\u00ean ngo\u00e0i c\u1ee7a s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m. L\u00fd do nh\u01b0 sau:<\/span><\/span><\/p>\n

1) Sau khi \u0111\u1eb7t m\u1eabu th\u1eed v\u00e0o bu\u1ed3ng, r\u00e3nh tr\u01a1n \u0111\u01b0\u1ee3c chi\u1ebfm gi\u1eef v\u00e0 vi\u1ec7c thu h\u1eb9p r\u00e3nh s\u1ebd d\u1eabn \u0111\u1ebfn t\u0103ng t\u1ed1c \u0111\u1ed9 lu\u1ed3ng kh\u00ed. Lu\u1ed3ng kh\u00ed v\u00e0 ch\u0103n \u0111\u01b0\u1ee3c t\u0103ng t\u1ed1c<\/span><\/span><\/p>\n

Trao \u0111\u1ed5i nhi\u1ec7t gi\u1eefa c\u00e1c m\u1eabu th\u1eed. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi vi\u1ec7c t\u00e1i t\u1ea1o c\u00e1c \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng, v\u00ec trong c\u00e1c ti\u00eau chu\u1ea9n c\u00f3 li\u00ean quan quy \u0111\u1ecbnh r\u1eb1ng l\u01b0u l\u01b0\u1ee3ng kh\u00ed xung quanh m\u1eabu th\u1eed trong bu\u1ed3ng th\u1eed kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 1,7 m\/s \u0111\u1ed1i v\u1edbi th\u1eed nghi\u1ec7m m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9, \u0111\u1ec3 tr\u00e1nh m\u1eabu th\u1eed v\u00e0 b\u1ea7u kh\u00ed quy\u1ec3n xung quanh t\u1ea1o ra s\u1ef1 d\u1eabn nhi\u1ec7t kh\u00f4ng th\u1ef1c t\u1ebf. Khi kh\u00f4ng t\u1ea3i, t\u1ed1c \u0111\u1ed9 gi\u00f3 trung b\u00ecnh trong bu\u1ed3ng th\u1eed l\u00e0 0,6 ~ 0,8m\/s, kh\u00f4ng qu\u00e1 1m\/s. khi t\u1ef7 l\u1ec7 kh\u00f4ng gian v\u00e0 di\u1ec7n t\u00edch quy \u0111\u1ecbnh trong a) v\u00e0 b) \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng, t\u1ed1c \u0111\u1ed9 gi\u00f3 c\u1ee7a tr\u01b0\u1eddng d\u00f2ng c\u00f3 th\u1ec3 t\u0103ng (50 ~ 100)% v\u00e0 t\u1ed1c \u0111\u1ed9 gi\u00f3 c\u1ef1c \u0111\u1ea1i trung b\u00ecnh l\u00e0 (1 ~ 1,7) m\/s. \u0110\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u quy \u0111\u1ecbnh trong ti\u00eau chu\u1ea9n. N\u1ebfu th\u1ec3 t\u00edch ho\u1eb7c di\u1ec7n t\u00edch m\u1eb7t c\u1eaft ngang \u0111\u00f3n gi\u00f3 c\u1ee7a m\u1eabu th\u1eed t\u0103ng kh\u00f4ng gi\u1edbi h\u1ea1n trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m, t\u1ed1c \u0111\u1ed9 lu\u1ed3ng kh\u00ed s\u1ebd t\u0103ng v\u01b0\u1ee3t qu\u00e1 t\u1ed1c \u0111\u1ed9 gi\u00f3 c\u1ef1c \u0111\u1ea1i quy \u0111\u1ecbnh trong ti\u00eau chu\u1ea9n th\u1eed nghi\u1ec7m trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m th\u1ef1c t\u1ebf v\u00e0 t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a k\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m s\u1ebd b\u1ecb nghi ng\u1edd.<\/span><\/span><\/p>\n

2) C\u00e1c ch\u1ec9 s\u1ed1 \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a c\u00e1c th\u00f4ng s\u1ed1 m\u00f4i tr\u01b0\u1eddng (nh\u01b0 nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m, t\u1ed1c \u0111\u1ed9 l\u1eafng \u0111\u1ecdng s\u01b0\u01a1ng mu\u1ed1i, v.v.) trong bu\u1ed3ng l\u00e0m vi\u1ec7c c\u1ee7a bu\u1ed3ng kh\u00ed h\u1eadu \u0111\u1ec1u \u1edf tr\u1ea1ng th\u00e1i kh\u00f4ng t\u1ea3i<\/span><\/span><\/p>\n

Sau khi m\u1eabu th\u1eed \u0111\u01b0\u1ee3c \u0111\u1eb7t v\u00e0o bu\u1ed3ng th\u1eed, k\u1ebft qu\u1ea3 th\u1eed s\u1ebd c\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn t\u00ednh \u0111\u1ed3ng nh\u1ea5t c\u1ee7a c\u00e1c th\u00f4ng s\u1ed1 m\u00f4i tr\u01b0\u1eddng trong bu\u1ed3ng l\u00e0m vi\u1ec7c c\u1ee7a bu\u1ed3ng th\u1eed. Kh\u00f4ng gian m\u00e0 m\u1eabu th\u1eed chi\u1ebfm gi\u1eef c\u00e0ng l\u1edbn th\u00ec t\u00e1c \u0111\u1ed9ng c\u00e0ng nghi\u00eam tr\u1ecdng. D\u1eef li\u1ec7u th\u1eed nghi\u1ec7m \u0111\u01b0\u1ee3c \u0111o cho th\u1ea5y ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 gi\u1eefa ph\u00eda \u0111\u00f3n gi\u00f3 v\u00e0 ph\u00eda khu\u1ea5t gi\u00f3 trong tr\u01b0\u1eddng d\u00f2ng ch\u1ea3y c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi<\/span><\/span><\/p>\n

3 ~ 8 \u2103, v\u00e0 tr\u00ean 10 \u2103 trong tr\u01b0\u1eddng h\u1ee3p nghi\u00eam tr\u1ecdng. Do \u0111\u00f3, c\u00e1c y\u00eau c\u1ea7u c\u1ee7a a) v\u00e0 b) ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng c\u00e0ng nhi\u1ec1u c\u00e0ng t\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh \u0111\u1ed3ng nh\u1ea5t c\u1ee7a c\u00e1c th\u00f4ng s\u1ed1 m\u00f4i tr\u01b0\u1eddng xung quanh s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m.<\/span><\/span><\/p>\n

3) Theo nguy\u00ean l\u00fd d\u1eabn nhi\u1ec7t, nhi\u1ec7t \u0111\u1ed9 c\u1ee7a lu\u1ed3ng kh\u00f4ng kh\u00ed g\u1ea7n th\u00e0nh b\u1ec3 th\u01b0\u1eddng ch\u00eanh l\u1ec7ch v\u1edbi nhi\u1ec7t \u0111\u1ed9 t\u00e2m tr\u01b0\u1eddng d\u00f2ng ch\u1ea3y 2 ~ 3\u2103<\/span><\/span><\/p>\n

\u1ede gi\u1edbi h\u1ea1n tr\u00ean v\u00e0 d\u01b0\u1edbi, c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 5\u2103. Nhi\u1ec7t \u0111\u1ed9 c\u1ee7a th\u00e0nh b\u1ec3 v\u00e0 nhi\u1ec7t \u0111\u1ed9 c\u1ee7a tr\u01b0\u1eddng d\u00f2ng ch\u1ea3y g\u1ea7n th\u00e0nh b\u1ec3 ch\u00eanh l\u1ec7ch 2 ~ 3\u2103 (t\u00f9y thu\u1ed9c v\u00e0o c\u1ea5u tr\u00fac v\u00e0 v\u1eadt li\u1ec7u c\u1ee7a th\u00e0nh b\u1ec3). Ch\u00eanh l\u1ec7ch gi\u1eefa nhi\u1ec7t \u0111\u1ed9 th\u1eed nghi\u1ec7m v\u00e0 m\u00f4i tr\u01b0\u1eddng kh\u00ed quy\u1ec3n b\u00ean ngo\u00e0i c\u00e0ng l\u1edbn th\u00ec ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 tr\u00ean c\u00e0ng l\u1edbn. Do \u0111\u00f3, kh\u00f4ng gian trong kho\u1ea3ng c\u00e1ch 100 ~ 150 mm t\u1eeb th\u00e0nh b\u1ec3 l\u00e0 kh\u00f4ng s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c.<\/span><\/span><\/p>\n

2. L\u1ef1a ch\u1ecdn ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9<\/span><\/span><\/strong><\/span><\/span><\/h1>\n

Hi\u1ec7n nay, ph\u1ea1m vi bu\u1ed3ng th\u1eed nhi\u1ec7t \u0111\u1ed9 \u1edf n\u01b0\u1edbc ngo\u00e0i n\u00f3i chung l\u00e0 \u2013 73 ~ + 177 \u2103 ho\u1eb7c \u2013 70 ~ + 180 \u2103. H\u1ea7u h\u1ebft c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t trong n\u01b0\u1edbc (1)<\/span><\/span><\/p>\n

N\u00f3i chung l\u00e0 \u2013 80 ~ + 130 \u2103, \u2013 60 ~ + 130 \u2103, \u2013 40 ~ + 130 \u2103. Ngo\u00e0i ra c\u00f2n c\u00f3 nhi\u1ec7t \u0111\u1ed9 cao l\u00ean \u0111\u1ebfn 150 \u2103. C\u00e1c ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 n\u00e0y n\u00f3i chung c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u ki\u1ec3m tra nhi\u1ec7t \u0111\u1ed9 c\u1ee7a h\u1ea7u h\u1ebft c\u00e1c s\u1ea3n ph\u1ea9m qu\u00e2n s\u1ef1 v\u00e0 d\u00e2n d\u1ee5ng trong n\u01b0\u1edbc. Tr\u1eeb khi c\u00f3 nhu c\u1ea7u \u0111\u1eb7c bi\u1ec7t, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t g\u1ea7n \u0111\u1ed9ng c\u01a1 v\u00e0 c\u00e1c ngu\u1ed3n nhi\u1ec7t kh\u00e1c, th\u00ec kh\u00f4ng th\u1ec3 t\u0103ng gi\u1edbi h\u1ea1n nhi\u1ec7t \u0111\u1ed9 tr\u00ean m\u1ed9t c\u00e1ch m\u00f9 qu\u00e1ng. B\u1edfi v\u00ec nhi\u1ec7t \u0111\u1ed9 gi\u1edbi h\u1ea1n tr\u00ean c\u00e0ng cao th\u00ec ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 b\u00ean trong v\u00e0 b\u00ean ngo\u00e0i bu\u1ed3ng c\u00e0ng l\u1edbn v\u00e0 \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a tr\u01b0\u1eddng d\u00f2ng ch\u1ea3y b\u00ean trong bu\u1ed3ng c\u00e0ng k\u00e9m. Kh\u00f4ng gian ph\u00f2ng l\u00e0m vi\u1ec7c kh\u1ea3 d\u1ee5ng c\u00e0ng nh\u1ecf. M\u1eb7t kh\u00e1c, nhi\u1ec7t \u0111\u1ed9 gi\u1edbi h\u1ea1n tr\u00ean c\u00e0ng cao th\u00ec y\u00eau c\u1ea7u v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t (nh\u01b0 b\u00f4ng th\u1ee7y tinh) trong l\u1edbp xen k\u1ebd c\u1ee7a th\u00e0nh bu\u1ed3ng c\u00e0ng cao. Y\u00eau c\u1ea7u v\u1ec1 t\u00ednh ch\u1ea5t b\u1ecbt k\u00edn c\u1ee7a bu\u1ed3ng c\u00e0ng cao th\u00ec chi ph\u00ed ch\u1ebf t\u1ea1o bu\u1ed3ng c\u00e0ng cao.<\/span><\/span><\/p>\n

3. L\u1ef1a ch\u1ecdn ph\u1ea1m vi \u0111\u1ed9 \u1ea9m<\/span><\/span><\/strong><\/span><\/span><\/h1>\n

Ch\u1ec9 s\u1ed1 \u0111\u1ed9 \u1ea9m do c\u00e1c ph\u00f2ng th\u1eed nghi\u1ec7m m\u00f4i tr\u01b0\u1eddng trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc \u0111\u01b0a ra ch\u1ee7 y\u1ebfu l\u00e0 20 ~ 98% RH ho\u1eb7c 30 ~ 98% RH. N\u1ebfu ph\u00f2ng th\u1eed nghi\u1ec7m nhi\u1ec7t \u1ea9m kh\u00f4ng<\/span><\/span><\/p>\n

\u0110\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng h\u00fat \u1ea9m, ph\u1ea1m vi \u0111\u1ed9 \u1ea9m l\u00e0 60-98%. Lo\u1ea1i bu\u1ed3ng th\u1eed nghi\u1ec7m n\u00e0y ch\u1ec9 c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n th\u1eed nghi\u1ec7m \u0111\u1ed9 \u1ea9m cao, nh\u01b0ng gi\u00e1 c\u1ee7a n\u00f3 th\u1ea5p h\u01a1n nhi\u1ec1u. C\u1ea7n l\u01b0u \u00fd r\u1eb1ng ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 t\u01b0\u01a1ng \u1ee9ng ho\u1eb7c nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3m s\u01b0\u01a1ng th\u1ea5p nh\u1ea5t ph\u1ea3i \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh sau ch\u1ec9 s\u1ed1 \u0111\u1ed9 \u1ea9m. V\u00ec \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i li\u00ean quan tr\u1ef1c ti\u1ebfp \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed1i v\u1edbi c\u00f9ng m\u1ed9t h\u00e0m l\u01b0\u1ee3ng \u1ea9m tuy\u1ec7t \u0111\u1ed1i, nhi\u1ec7t \u0111\u1ed9 c\u00e0ng cao th\u00ec \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i c\u00e0ng nh\u1ecf. V\u00ed d\u1ee5, h\u00e0m l\u01b0\u1ee3ng \u1ea9m tuy\u1ec7t \u0111\u1ed1i l\u00e0 5 g \/ kg (ch\u1ec9 5 g h\u01a1i n\u01b0\u1edbc trong 1 kg kh\u00f4ng kh\u00ed kh\u00f4). Khi nhi\u1ec7t \u0111\u1ed9 l\u00e0 29 \u2103, \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i l\u00e0 20% RH; khi nhi\u1ec7t \u0111\u1ed9 l\u00e0 6 \u2103, \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i l\u00e0 90% RH. Khi nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m xu\u1ed1ng d\u01b0\u1edbi 4 \u2103, \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i v\u01b0\u1ee3t qu\u00e1 100% v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng ng\u01b0ng t\u1ee5 s\u1ebd x\u1ea3y ra trong bu\u1ed3ng.<\/span><\/span><\/p>\n

\u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 \u0111\u1ed9 \u1ea9m cao, ch\u1ec9 c\u1ea7n phun h\u01a1i n\u01b0\u1edbc ho\u1eb7c c\u00e1c gi\u1ecdt n\u01b0\u1edbc d\u1ea1ng s\u01b0\u01a1ng v\u00e0o kh\u00f4ng kh\u00ed c\u1ee7a bu\u1ed3ng \u0111\u1ec3 t\u1ea1o \u1ea9m. Nhi\u1ec7t \u0111\u1ed9 th\u1ea5p v\u00e0 \u0111\u1ed9 \u1ea9m th\u1ea5p t\u01b0\u01a1ng \u0111\u1ed1i kh\u00f3 ki\u1ec3m so\u00e1t v\u00ec \u0111\u1ed9 \u1ea9m tuy\u1ec7t \u0111\u1ed1i t\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y r\u1ea5t th\u1ea5p, \u0111\u00f4i khi th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi \u0111\u1ed9 \u1ea9m tuy\u1ec7t \u0111\u1ed1i trong kh\u00ed quy\u1ec3n. C\u1ea7n ph\u1ea3i kh\u1eed \u1ea9m kh\u00f4ng kh\u00ed l\u01b0u th\u00f4ng trong bu\u1ed3ng \u0111\u1ec3 l\u00e0m cho kh\u00f4ng kh\u00ed kh\u00f4. Hi\u1ec7n nay, h\u1ea7u h\u1ebft c\u00e1c bu\u1ed3ng nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 \u1ea9m trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc \u0111\u1ec1u \u00e1p d\u1ee5ng nguy\u00ean l\u00fd l\u00e0m l\u1ea1nh v\u00e0 kh\u1eed \u1ea9m, \u0111\u00f3 l\u00e0 th\u00eam m\u1ed9t nh\u00f3m \u1ed1ng d\u1eabn \u00e1nh s\u00e1ng l\u00e0m l\u1ea1nh v\u00e0o ph\u00f2ng \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed c\u1ee7a bu\u1ed3ng. Khi kh\u00f4ng kh\u00ed \u1ea9m \u0111i qua \u1ed1ng l\u1ea1nh, \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a n\u00f3 s\u1ebd \u0111\u1ea1t 100% RH. Do kh\u00f4ng kh\u00ed b\u00e3o h\u00f2a v\u00e0 ng\u01b0ng t\u1ee5 tr\u00ean \u1ed1ng d\u1eabn \u00e1nh s\u00e1ng, kh\u00f4ng kh\u00ed k\u00e9o d\u00e0i tr\u1edf n\u00ean kh\u00f4 h\u01a1n. V\u1ec1 m\u1eb7t l\u00fd thuy\u1ebft, ph\u01b0\u01a1ng ph\u00e1p kh\u1eed \u1ea9m n\u00e0y c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3m s\u01b0\u01a1ng d\u01b0\u1edbi 0. Tuy nhi\u00ean, khi nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t c\u1ee7a \u0111i\u1ec3m l\u1ea1nh \u0111\u1ea1t 0 \u2103, c\u00e1c gi\u1ecdt n\u01b0\u1edbc tr\u00ean b\u1ec1 m\u1eb7t \u1ed1ng d\u1eabn \u00e1nh s\u00e1ng s\u1ebd \u0111\u00f3ng b\u0103ng, \u0111i\u1ec1u n\u00e0y s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i nhi\u1ec7t tr\u00ean b\u1ec1 m\u1eb7t \u1ed1ng d\u1eabn \u00e1nh s\u00e1ng v\u00e0 l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng kh\u1eed \u1ea9m. Ngo\u00e0i ra, do bu\u1ed3ng kh\u00f4ng th\u1ec3 b\u1ecbt k\u00edn ho\u00e0n to\u00e0n n\u00ean kh\u00f4ng kh\u00ed \u1ea9m trong kh\u00ed quy\u1ec3n s\u1ebd th\u1ea5m v\u00e0o bu\u1ed3ng v\u00e0 l\u00e0m t\u0103ng nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3m s\u01b0\u01a1ng. M\u1eb7t kh\u00e1c, kh\u00f4ng kh\u00ed \u1ea9m ch\u1ea3y gi\u1eefa c\u00e1c \u1ed1ng d\u1eabn \u00e1nh s\u00e1ng ch\u1ec9 \u0111\u1ea1t tr\u1ea1ng th\u00e1i b\u00e3o h\u00f2a t\u1ea1i th\u1eddi \u0111i\u1ec3m ti\u1ebfp x\u00fac v\u1edbi \u1ed1ng d\u1eabn \u00e1nh s\u00e1ng (\u0111i\u1ec3m l\u1ea1nh) v\u00e0 h\u01a1i n\u01b0\u1edbc b\u1ecb t\u00e1ch ra. Do \u0111\u00f3, ph\u01b0\u01a1ng ph\u00e1p kh\u1eed \u1ea9m n\u00e0y kh\u00f3 c\u00f3 th\u1ec3 gi\u1eef nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3m s\u01b0\u01a1ng trong bu\u1ed3ng d\u01b0\u1edbi 0 \u2103. Nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3m m\u00e2y t\u1ed1i thi\u1ec3u th\u1ef1c t\u1ebf l\u00e0 5 ~ 7 \u2103. Nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3m s\u01b0\u01a1ng 5 \u2103 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi \u0111\u1ed9 \u1ea9m tuy\u1ec7t \u0111\u1ed1i l\u00e0 0,0055 g \/ kg v\u00e0 nhi\u1ec7t \u0111\u1ed9 t\u01b0\u01a1ng \u1ee9ng v\u1edbi \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i 20% RH l\u00e0 30 \u2103. N\u1ebfu nhi\u1ec7t \u0111\u1ed9 y\u00eau c\u1ea7u l\u00e0 20 \u2103 v\u00e0 \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u1ea1t 20% RH, th\u00ec nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3m s\u01b0\u01a1ng t\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y l\u00e0 – 3 \u2103. R\u1ea5t kh\u00f3 \u0111\u1ec3 kh\u1eed \u1ea9m b\u1eb1ng c\u00e1ch l\u00e0m l\u1ea1nh v\u00e0 ph\u1ea3i l\u1ef1a ch\u1ecdn h\u1ec7 th\u1ed1ng s\u1ea5y kh\u00f4ng kh\u00ed.<\/span><\/span><\/p>\n

\n
<\/div>\n
<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

1. L\u1ef1a ch\u1ecdn \u00e2m l\u01b0\u1ee3ng Khi s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m (linh ki\u1ec7n, th\u00e0nh ph\u1ea7n, b\u1ed9 ph\u1eadn ho\u1eb7c m\u00e1y ho\u00e0n ch\u1ec9nh) \u0111\u01b0\u1ee3c \u0111\u1eb7t trong bu\u1ed3ng m\u00f4i tr\u01b0\u1eddng kh\u00ed h\u1eadu \u0111\u1ec3 th\u1eed nghi\u1ec7m, nh\u1eb1m \u0111\u1ea3m b\u1ea3o r\u1eb1ng s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m Kh\u00f4ng kh\u00ed xung quanh c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1eed nghi\u1ec7m m\u00f4i<\/p>\n","protected":false},"author":1,"featured_media":19810,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["post-19809","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc-cong-nghe"],"acf":[],"_links":{"self":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19809","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/comments?post=19809"}],"version-history":[{"count":1,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19809\/revisions"}],"predecessor-version":[{"id":22051,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19809\/revisions\/22051"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media\/19810"}],"wp:attachment":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=19809"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/categories?post=19809"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/tags?post=19809"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}