t*o
发帖数: 2606 | 1 我家的空调制冷没问题.
但是室外连接condenser 的那些管子外面包的cover老化严重.(见下图),
我的问题是:
(A) 一共有四根线/管,其中(1)和(2)似乎是冷却剂的管子,外面的隔热套都坏掉了,是不
是要换新的啊? 这东西或者这种材料英文叫什么? 为了避免拆管子,能不能用类似的材
料缠一下就可以了?
(B) 左上方那个盒子据说是个保护插座的盒子. 下面有很多锈. 需要换吗? 还是把锈除
了,刷上类似颜色的漆就可以了?
(C) (3) 和 (4) 都是用来走电线的么? 为什么不合并起来?
(D) 还有其他需要做的么?
谢谢. |
g*****9
发帖数: 4125 | 2 1 is the low pressure come from inside your house (should feel cold)
2 is the high pressure going into your house (should feel warm0
3 is control signal wire to the board.
4 is the 220V ac that actually runs the compressor.
B is called service disconnect, it is to protect the repair men not to get
shocked accidentally.
If the box is not rust through, you can just remove the rust and paint over,
some box use fuse inside, you can just replace them with copper pipe if you
want to.
http://www.pexsup
【在 t*o 的大作中提到】
: 我家的空调制冷没问题.
: 但是室外连接condenser 的那些管子外面包的cover老化严重.(见下图),
: 我的问题是:
: (A) 一共有四根线/管,其中(1)和(2)似乎是冷却剂的管子,外面的隔热套都坏掉了,是不
: 是要换新的啊? 这东西或者这种材料英文叫什么? 为了避免拆管子,能不能用类似的材
: 料缠一下就可以了?
: (B) 左上方那个盒子据说是个保护插座的盒子. 下面有很多锈. 需要换吗? 还是把锈除
: 了,刷上类似颜色的漆就可以了?
: (C) (3) 和 (4) 都是用来走电线的么? 为什么不合并起来?
: (D) 还有其他需要做的么?
|
L***s
发帖数: 2944 | 3 你家的墙该打理打理了，
地基很低啊，siding panel木板都快挨地了。无良奸商。 |
t*o
发帖数: 2606 | 4 非常感谢!
你发的那个网站上的pipe insulation侧面是切开的,
套到pipe上应该很容易. 可是怎么固定比较好? 用铜丝缠? 还是胶粘?
over,
you
【在 g*****9 的大作中提到】
: 1 is the low pressure come from inside your house (should feel cold)
: 2 is the high pressure going into your house (should feel warm0
: 3 is control signal wire to the board.
: 4 is the 220V ac that actually runs the compressor.
: B is called service disconnect, it is to protect the repair men not to get
: shocked accidentally.
: If the box is not rust through, you can just remove the rust and paint over,
: some box use fuse inside, you can just replace them with copper pipe if you
: want to.
: http://www.pexsup
|
t*o
发帖数: 2606 | 5 是啊是啊.
这个是townhouse,有condo association 管,所以不能随便改.
否则我肯定把下面两层木板改水泥了.
怎么处理比较好? 就把那些绿色东西刷掉就可以了么?
【在 L***s 的大作中提到】
: 你家的墙该打理打理了，
: 地基很低啊，siding panel木板都快挨地了。无良奸商。
|
g*****9
发帖数: 4125 | 6 It is self adhesive, you just cut to length, put on and peel off the plastic
or paper, it will glue itself shut, very easy to do.
【在 t*o 的大作中提到】
: 非常感谢!
: 你发的那个网站上的pipe insulation侧面是切开的,
: 套到pipe上应该很容易. 可是怎么固定比较好? 用铜丝缠? 还是胶粘?
:
: over,
: you
|
s**********d
发帖数: 36899 | 7
一两块钱home depot lowe's就有。
【在 t*o 的大作中提到】
: 是啊是啊.
: 这个是townhouse,有condo association 管,所以不能随便改.
: 否则我肯定把下面两层木板改水泥了.
: 怎么处理比较好? 就把那些绿色东西刷掉就可以了么?
|
C*******d
发帖数: 15836 | 8 The high pressure one #2 going into the house should feel cold instead of
warm. That's how cold gets into the house. #1 should be warmer than it
because some cold from #2 has been transferred to the house and warm
transferred from the house.
Thanks for the links. Actually I should get my pipe insulation replaced too
because a lot of cold can be lost during transport.
The hole on OP's wall where pipe #2 enters should definitely be sealed. I
would use expansion foam for that.
【在 g*****9 的大作中提到】
: It is self adhesive, you just cut to length, put on and peel off the plastic
: or paper, it will glue itself shut, very easy to do.
|
t*o
发帖数: 2606 | 9 你说的 expansion foam 是那种喷出来浅黄色的象泡沫一样的东西么?
那东西能用在室外么?
谢谢.
too
【在 C*******d 的大作中提到】
: The high pressure one #2 going into the house should feel cold instead of
: warm. That's how cold gets into the house. #1 should be warmer than it
: because some cold from #2 has been transferred to the house and warm
: transferred from the house.
: Thanks for the links. Actually I should get my pipe insulation replaced too
: because a lot of cold can be lost during transport.
: The hole on OP's wall where pipe #2 enters should definitely be sealed. I
: would use expansion foam for that.
|
t*o
发帖数: 2606 | 10 谢谢.
plastic
【在 g*****9 的大作中提到】
: It is self adhesive, you just cut to length, put on and peel off the plastic
: or paper, it will glue itself shut, very easy to do.
|
|
|
s**********d
发帖数: 36899 | 11 你说反了。hot cold是靠压力变化transfer的，初中就学过。
细管是高压管，热的。粗管是低压管，凉的。
of
【在 C*******d 的大作中提到】
: The high pressure one #2 going into the house should feel cold instead of
: warm. That's how cold gets into the house. #1 should be warmer than it
: because some cold from #2 has been transferred to the house and warm
: transferred from the house.
: Thanks for the links. Actually I should get my pipe insulation replaced too
: because a lot of cold can be lost during transport.
: The hole on OP's wall where pipe #2 enters should definitely be sealed. I
: would use expansion foam for that.
|
C*******d
发帖数: 15836 | 12 是的。刚才确定了一下，可以用在室外，我都用过很多次了。我用的是Great Stuff牌
子，HD和LOWES很容易买到。
【在 t*o 的大作中提到】
: 你说的 expansion foam 是那种喷出来浅黄色的象泡沫一样的东西么?
: 那东西能用在室外么?
: 谢谢.
:
: too
|
a9
发帖数: 21638 | 13 高压管应该是液体，凉的，到室内蒸发成气体带走热量吧？
我越来越糊涂了，呵呵。
【在 s**********d 的大作中提到】
: 你说反了。hot cold是靠压力变化transfer的，初中就学过。
: 细管是高压管，热的。粗管是低压管，凉的。
:
: of
|
C*******d
发帖数: 15836 | 14 谢谢指正！看来我错怪gezhi了。既然你们都这么说，看来我的确想当然了，没想到
HVAC的水这么深。回去我还得好好学习学习，以免以后耽误别人。
【在 s**********d 的大作中提到】
: 你说反了。hot cold是靠压力变化transfer的，初中就学过。
: 细管是高压管，热的。粗管是低压管，凉的。
:
: of
|
s**********d
发帖数: 36899 | 15 高压管是液体，但是热的，在室内evaporater那里膨胀变成气体的时候吸热变凉。
回到外面压缩机被压回液体变热。大部分热被室外散热器和风扇排掉了，但进屋时
不可避免还是要比外界温度热。粗细管应该只有粗的凉管包泡沫层，细管因为你想
把余热也散掉是不包的。
【在 a9 的大作中提到】
: 高压管应该是液体，凉的，到室内蒸发成气体带走热量吧？
: 我越来越糊涂了，呵呵。
|
T*U
发帖数: 22634 | 16 en，想不到什么原因细管还要包？安装空调的脑袋坏掉了。
【在 s**********d 的大作中提到】
: 高压管是液体，但是热的，在室内evaporater那里膨胀变成气体的时候吸热变凉。
: 回到外面压缩机被压回液体变热。大部分热被室外散热器和风扇排掉了，但进屋时
: 不可避免还是要比外界温度热。粗细管应该只有粗的凉管包泡沫层，细管因为你想
: 把余热也散掉是不包的。
|
p*a
发帖数: 3350 | 17 防腐放绣
【在 T*U 的大作中提到】
: en，想不到什么原因细管还要包？安装空调的脑袋坏掉了。
|
g*****9
发帖数: 4125 | 18 No problem at all. The important part is I should not make any mistake on
this since I wrote my doctoral thesis on how to improve HVAC efficiency and
I worked as an HVAC engineer for a few years.
【在 C*******d 的大作中提到】
: 谢谢指正！看来我错怪gezhi了。既然你们都这么说，看来我的确想当然了，没想到
: HVAC的水这么深。回去我还得好好学习学习，以免以后耽误别人。
|
s**********d
发帖数: 36899 | 19
一般没必要。不等外面的锈里面evaporator就锈烂了。
【在 p*a 的大作中提到】
: 防腐放绣
|
t*o
发帖数: 2606 | 20 赞.hehe.
那你说那个热管到底是包(防锈?)好还是不包(多散热?)好啊?
and
【在 g*****9 的大作中提到】
: No problem at all. The important part is I should not make any mistake on
: this since I wrote my doctoral thesis on how to improve HVAC efficiency and
: I worked as an HVAC engineer for a few years.
|
|
|
s**********d
发帖数: 36899 | 21
防锈不是包泡沫能防的。
外面的防也没有意义，屋里的一定是锈的快。
【在 t*o 的大作中提到】
: 赞.hehe.
: 那你说那个热管到底是包(防锈?)好还是不包(多散热?)好啊?
:
: and
|
g*****9
发帖数: 4125 | 22 It does not matter that much.
The main reason the cold pipe (bigger one) is insulated is because if it is
not water will condensate on it and drip down on to area should not get wet
and cause other problems.
If possible you can wrap them both together, use the cold pipe to help cool
down the hot pipe part of the way.
If you system is very efficient, the cold return pipe should be just a few
degree cooler than the room temp. Most over sized system is not, and the
pipe is much colder than the air.
【在 t*o 的大作中提到】
: 赞.hehe.
: 那你说那个热管到底是包(防锈?)好还是不包(多散热?)好啊?
:
: and
|
C*******d
发帖数: 15836 | 23 Thanks so much again, gezhi! I am very glad to have people like you and
sharpdressed to keep on enlightening us.
and
【在 g*****9 的大作中提到】
: No problem at all. The important part is I should not make any mistake on
: this since I wrote my doctoral thesis on how to improve HVAC efficiency and
: I worked as an HVAC engineer for a few years.
|
