Yeti - Revision history

Rabauza: /* Materials used */

2016-12-02T18:32:19Z

‎Materials used

Rabauza: /* Materials used */

2016-12-02T18:21:58Z

‎Materials used

Rabauza: /* Materials used */

2016-12-02T18:21:10Z

‎Materials used

Rabauza: /* Procedure */

2016-12-02T18:18:28Z

‎Procedure

Rabauza: /* Procedure */

2016-12-02T18:17:18Z

‎Procedure

Rabauza: /* Procedure */

2016-12-02T18:15:52Z

‎Procedure

Lbender: /* Data */

2016-12-02T18:15:08Z

‎Data

Lbender: /* Data */

2016-12-02T18:13:30Z

‎Data

Lbender: /* Data */

2016-12-02T18:12:25Z

‎Data

Rabauza: /* Procedure */

2016-12-02T17:55:58Z

‎Procedure

@@ Line 33: / Line 33: @@
 We grabbed a conventional white Styrofoam coffee cup and drew a mark inside of the cup with a marker. This mark was the limit of the amount of volume of water that was used in all of our measurements. Once the multi-meter was running and the data collection parameters were suitable to our experiment we decided to pour the hot water in the marked Styrofoam cup, and then transferred this water to the ''YETI'' cups.
-We used the same Styrofoam cup in order to be consistent with the amount of water being used, and tried to rush in the process for the water not to lose much heat to the colder environment. But how much colder was it? We decided to make measurements of the room temperature with the probes connected to the multi-meter before and after the data collection process, in order to have more accurate data. The room environment oscillated around 22 degrees Celsius. Once the data collection started, the human labor was done, we just had to come back after those 240 minutes and collect the data.
+We used the same Styrofoam cup in order to be consistent with the amount of water being used (same volume of water used with ''YETI'' cups only; different amount used for off-brand cup) and tried to rush in the process for the water not to lose much heat to the colder environment. But how much colder was it? We decided to make measurements of the room temperature with the probes connected to the multi-meter before and after the data collection process, in order to have more accurate data. The room environment oscillated around 22 degrees Celsius. Once the data collection started, the human labor was done, we just had to come back after those 240 minutes and collect the data.
 This exact same process was repeated two more times (which gives us a total of three measurements). This was repeated to reduce human error and get more accurate data by using the average of our values.
@@ Line 45: / Line 45: @@
 Please go to the Analysis staged further in this document for more info about the Law of Cooling.
-In the Law of Cooling, the h corresponds to the cooling constant. This depends on the mass and the specific heat capacity of the material of which the cup is made. This cooling constant is responsible for the "efficiency" of the cup in keeping the coffee warm, or of the coozie in keeping the beverage cold. So the main focus of this project was on finding and comparing the different values of h. We derived a formula for h basing ourselves in the Law of cooling itself, and all the data we collected from the experiment. This cooling constant told us how much better, or worse, the ''YETI'' cups were in comparison to the off-brand one. Further information can be found in the ''Analysis'' section below.
+Since the Law of cooling involves the mass of water placed inside of cup, we measured the mass of the water placed in the Styrofoam cup with a digital scale. Mass measurements were effectuated twice, because the amount of water was different for the off-brand cup than for the ''YETI'' cups. We had to use a different amount of water for the off-brand cup, because this cup was a little taller. Its height did not allow the probe to be left inside and collect the data, so we did a second mark on the white Styrofoam cup in order to be consistent with the amount of water used for every trial (3 total).
 ==Data==

@@ Line 31: / Line 31: @@
 [[File:Project rodrigo.PNG|frame|Vernier's LabQuest multi-meter used in the experiment measuring the temperature of hot water (75.1 degrees Celsius)]]
 We grabbed a conventional white Styrofoam coffee cup and drew a mark inside of the cup with a marker. This mark was the limit of the amount of volume of water that was used in all of our measurements. Once the multi-meter was running and the data collection parameters were suitable to our experiment we decided to pour the hot water in the marked Styrofoam cup, and then transferred this water to the ''YETI'' cups.
 We used the same Styrofoam cup in order to be consistent with the amount of water being used, and tried to rush in the process for the water not to lose much heat to the colder environment. But how much colder was it? We decided to make measurements of the room temperature with the probes connected to the multi-meter before and after the data collection process, in order to have more accurate data. The room environment oscillated around 22 degrees Celsius. Once the data collection started, the human labor was done, we just had to come back after those 240 minutes and collect the data.

@@ Line 29: / Line 29: @@
 The first step was to put plenty of water in the heater. The heater raised the temperature of the water to about 80 Celsius degrees (which is regular coffee temperature). Next we decided to connect the Vernier ''Labquest'' multi-meter to the computer and changed the correspondent settings in the data collection section of the program (Logger Pro 3.5.8.1). The Vernier ''Logger Pro'' multi-meter that was used can be seen at image 1. The multi-meter had 3 probes connected to it, two for each ''YETI'' cup, and the third one was used to measure the temperature of the off-brand cup. We changed the data collection time to about 240 minutes, which is the time it took the water to cool down to a little further below what we considered "unacceptable" coffee temperatures once it was placed inside the ''YETI'' insulated coffee cups. In those 240 minutes the water reached temperatures of about 40 degrees Celsius.
-[[File:Project rodrigo.PNG|frame|Measurement]]
+[[File:Project rodrigo.PNG|frame|Vernier's LabQuest multi-meter used in the experiment measuring the temperature of hot water (75.1 degrees Celsius)]]
-We grabbed a conventional white Styrofoam coffee cup and drew a mark inside of the cup with a marker. This mark was the limit of the amount of volume of water that was used in all of our measurements. Once the multi-meter was running and the data collection parameters were suitable to our experiment we decided to pour the hot water in the marked Styrofoam cup, and then transferred this water to the ''YETI'' cups. We used the same Styrofoam cup in order to be consistent with the amount of water being used, and tried to rush in the process for the water not to lose much heat to the colder environment. But how much colder was it? We decided to make measurements of the room temperature with the probes connected to the multi-meter before and after the data collection process, in order to have more accurate data. The room environment oscillated around 22 degrees Celsius. Once the data collection started, the human labor was done, we just had to come back after those 240 minutes and collect the data.
+We grabbed a conventional white Styrofoam coffee cup and drew a mark inside of the cup with a marker. This mark was the limit of the amount of volume of water that was used in all of our measurements. Once the multi-meter was running and the data collection parameters were suitable to our experiment we decided to pour the hot water in the marked Styrofoam cup, and then transferred this water to the ''YETI'' cups.
 This exact same process was repeated two more times (which gives us a total of three measurements). This was repeated to reduce human error and get more accurate data by using the average of our values.

@@ Line 29: / Line 29: @@
 The first step was to put plenty of water in the heater. The heater raised the temperature of the water to about 80 Celsius degrees (which is regular coffee temperature). Next we decided to connect the Vernier ''Labquest'' multi-meter to the computer and changed the correspondent settings in the data collection section of the program (Logger Pro 3.5.8.1). The Vernier ''Logger Pro'' multi-meter that was used can be seen at image 1. The multi-meter had 3 probes connected to it, two for each ''YETI'' cup, and the third one was used to measure the temperature of the off-brand cup. We changed the data collection time to about 240 minutes, which is the time it took the water to cool down to a little further below what we considered "unacceptable" coffee temperatures once it was placed inside the ''YETI'' insulated coffee cups. In those 240 minutes the water reached temperatures of about 40 degrees Celsius.
-[[File:Project rodrigo.PNG|Measurement]]
+[[File:Project rodrigo.PNG|frame|Measurement]]
 We grabbed a conventional white Styrofoam coffee cup and drew a mark inside of the cup with a marker. This mark was the limit of the amount of volume of water that was used in all of our measurements. Once the multi-meter was running and the data collection parameters were suitable to our experiment we decided to pour the hot water in the marked Styrofoam cup, and then transferred this water to the ''YETI'' cups. We used the same Styrofoam cup in order to be consistent with the amount of water being used, and tried to rush in the process for the water not to lose much heat to the colder environment. But how much colder was it? We decided to make measurements of the room temperature with the probes connected to the multi-meter before and after the data collection process, in order to have more accurate data. The room environment oscillated around 22 degrees Celsius. Once the data collection started, the human labor was done, we just had to come back after those 240 minutes and collect the data.

@@ Line 29: / Line 29: @@
 The first step was to put plenty of water in the heater. The heater raised the temperature of the water to about 80 Celsius degrees (which is regular coffee temperature). Next we decided to connect the Vernier ''Labquest'' multi-meter to the computer and changed the correspondent settings in the data collection section of the program (Logger Pro 3.5.8.1). The Vernier ''Logger Pro'' multi-meter that was used can be seen at image 1. The multi-meter had 3 probes connected to it, two for each ''YETI'' cup, and the third one was used to measure the temperature of the off-brand cup. We changed the data collection time to about 240 minutes, which is the time it took the water to cool down to a little further below what we considered "unacceptable" coffee temperatures once it was placed inside the ''YETI'' insulated coffee cups. In those 240 minutes the water reached temperatures of about 40 degrees Celsius.
-[[File:Project rodrigo.PNG]]
+[[File:Project rodrigo.PNG|Measurement]]
 We grabbed a conventional white Styrofoam coffee cup and drew a mark inside of the cup with a marker. This mark was the limit of the amount of volume of water that was used in all of our measurements. Once the multi-meter was running and the data collection parameters were suitable to our experiment we decided to pour the hot water in the marked Styrofoam cup, and then transferred this water to the ''YETI'' cups. We used the same Styrofoam cup in order to be consistent with the amount of water being used, and tried to rush in the process for the water not to lose much heat to the colder environment. But how much colder was it? We decided to make measurements of the room temperature with the probes connected to the multi-meter before and after the data collection process, in order to have more accurate data. The room environment oscillated around 22 degrees Celsius. Once the data collection started, the human labor was done, we just had to come back after those 240 minutes and collect the data.

← Older revision		Revision as of 18:15, 2 December 2016
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	[[File:KOA.png\|frame\|center\| alt = Alt text\|The average data set for the MyBevi cup. This trial yielded a value of 5.65 ± 0.07 (1/min) for the cooling constant.]]		[[File:KOA.png\|frame\|center\| alt = Alt text\|The average data set for the MyBevi cup. This trial yielded a value of 5.65 ± 0.07 (1/min) for the cooling constant.]]
		+


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−	[[File:TABLE.~~png~~\|frame\|center\|alt = ALT text\|Table of the cooling constants for all of the configurations in the experiment]]	+	[[File:TABLE.PNG\|frame\|center\|alt = ALT text\|Table of the cooling constants for all of the configurations in the experiment]]

← Older revision		Revision as of 18:13, 2 December 2016
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−	[[File:CA.png\|frame\|left\| alt = Alt text\|The average data set for the Yeti coozie. This trial yielded a value of 5.48 ± 0.06 (1/min) for the cooling constant.]]	+	[[File:AC.png\|frame\|left\| alt = Alt text\|The average data set for the Yeti coozie. This trial yielded a value of 5.48 ± 0.06 (1/min) for the cooling constant.]]

	[[File:ASTY.png\|frame\|center\| alt = Alt text\|The average data set for the styrofoam cup. This trial yielded a value of 12.40 ± 0.07 (1/min) for the cooling constant.]]		[[File:ASTY.png\|frame\|center\| alt = Alt text\|The average data set for the styrofoam cup. This trial yielded a value of 12.40 ± 0.07 (1/min) for the cooling constant.]]

@@ Line 48: / Line 48: @@
 All data from the Newton's Law of Cooling experiment was plotted in gnuplot, and () was fit to the data to find the value for the cooling constant for each configuration.
 [[File:Y1.png|frame|left|alt = Alt text|The first trial using the Yeti cup. This trial yielded a value of 4.3 &plusmn; 0.2 (1/min) for the cooling constant.]]
 [[File:Y2.png|frame|center| alt = Alt text|The second trial using the Yeti cup. This trial yielded a value of 4.50 &plusmn; 0.09 (1/min) for the cooling constant.]]
 [[File:Y3.png|frame|left| alt = Alt text|The third trial using the Yeti cup. This trial yielded a value of 4.61 &plusmn; 0.03 (1/min) for the cooling constant.]]
-[[File:KO1.png|frame|left| alt = Alt text|The first trial using the MyBevi cup. This trial yielded a value of 5.51 &plusmn; 0.02 (1/min) for the cooling constant.]]
+[[File:KO2.png|frame|left| alt = Alt text|The second trial using the MyBevi cup. This trial yielded a value of 5.16 &plusmn; 0.02 (1/min) for the cooling constant.]]
-[[File:KO2.png|frame|center| alt = Alt text|The second trial using the MyBevi cup. This trial yielded a value of 5.16 &plusmn; 0.02 (1/min) for the cooling constant.]]
+[[File:S1.png|frame|left| alt = Alt text|The first trial using the styrofoam cup. This trial yielded a value of 12.8 &plusmn; 0.2 (1/min) for the cooling constant.]]
-[[File:KO3.png|frame|left| alt = Alt text|The third trial using the MyBevi cup. This trial yielded a value of 5.34 &plusmn; 0.02 (1/min) for the cooling constant.]]
+[[File:S3.png|frame|left| alt = Alt text|The third trial using the styrofoam cup. This trial yielded a value of 11.5 &plusmn; 0.3 (1/min) for the cooling constant.]]
-[[File:S1.png|frame|left| alt = Alt text|The first trial using the styrofoam cup. This trial yielded a value of 12.8 &plusmn; 0.2 (1/min) for the cooling constant.]]
+[[File:C2.png|frame|left| alt = Alt text|The second trial using the Yeti coozie. This trial yielded a value of 5.20 &plusmn; 0.07 (1/min) for the cooling constant.]]
-[[File:C1.png|frame|left| alt = Alt text|The first trial using the Yeti coozie. This trial yielded a value of 4.89 &plusmn; 0.02 (1/min) for the cooling constant.]]
+[[File:ASTY.png|frame|center| alt = Alt text|The average data set for the styrofoam cup. This trial yielded a value of 12.40 &plusmn; 0.07 (1/min) for the cooling constant.]]
-[[File:C2.png|frame|center| alt = Alt text|The second trial using the Yeti coozie. This trial yielded a value of 5.2 &plusmn; 0.07 (1/min) for the cooling constant.]]
+[[File:KOA.png|frame|center| alt = Alt text|The average data set for the MyBevi cup. This trial yielded a value of 5.65 &plusmn; 0.07 (1/min) for the cooling constant.]]
 All of the values for the cooling constant can be found in the table below: