Self Heating Coffee Can

Last week I went to grocery shopping. I found this coffee for $2.50. So I gave it a try.

– Front

– Back (look at the circle with Pink color)

– Open the bottom, and pop the green liquid. Leave it for 5 mins.

– Until the circle turn white.

– Then it’s ready to drink!!

Result.

– Temperature is quite hot.

– Time: it’s very convience.

– Taste: It’s suck!! It just likes a regular can coffee.

– Environment: I’m still curious how bad it is to the environment. Chemical, plastic. Well…there is a text “Please Recycle” on the label though.

Updated 08/06/07

I did some research (just google) on how it works.

Check out pictures inside of the container.

http://www.makezine.com/blog/archive/2005/07/wolfgang_puck_s_1.html

“So there it is, an exothermic reaction (gives heat off) with water and calcium oxide.”

here is another link from http://en.wikipedia.org/wiki/Self-heating_can

A self-heating can is an extension of the common food can. It involves the use of dual chambered cans, where an inner chamber holds the food or drink and the outer chamber houses chemicals that undergo an exothermic reaction when combined. When someone wants to eat the food, they pull a ring on the can that breaks the barrier separating the chemicals in the outer chamber. After the heat has been absorbed by the food, the eater can then enjoy a hot meal or drink. While it offers benefits to campers and people eating away from a stove or microwave, the concept is not yet widespread because of the added expenses and problems with heating the food evenly.

13 thoughts on “Self Heating Coffee Can

  1. พี่รู้ได้ไงเหรอครับว่าเป็น green liquid
    พูดถึง green liquid นี่นึกถึงพวกหนังที่มีสารปนเปื้อนกัมตภาพรังสี เป็นสีเขียวเลย

  2. @wat, nanoteam,
    Before I activated (555) the reaction, I saw a green-liquid. I have no idea what it is!! I hope it’s not real toxic chemical.

    @ong,
    I’ll fly soon. 55 (on the plane)

    @EscRiBiTioNiSt®
    Regular tall coffee is $1.60. But espresso is more expensive (around $3.50).

  3. น้ำสีเขียวเหรอ ดูน่ากลัวว่ะ ของสำเร็จรูปรสชาติมักจะห่วยแตกแบบนี้แหละไอ้เล็ก
    ซื้อกาแฟผง (instant coffee) มาชงกินเองดีกว่ามั้ง? เลือกเกรดดีๆ หน่อยก็ดีเน้อ😉

  4. หวัดดีพี่เล็ก

    ว่าแต่มันไม่อร่อย แล้วพี่ซื้อมาทำไมอ่ะคะ ซื้อมาลองกินดูเหรอ

    มันดีตรงเพ็คเก็ตนี้ละ ทำซะดูดีเชียว

    สู้กาแฟโบราณ ไม่ได้หรอก ว่ามั้ย?

    เอ้า..ลุงส่ายโนมเยอะๆๆ ๕๕๕

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